STAT 200 practice exam

 

Refer to the following frequency distribution for Questions 1, 2, 3, and 4.

 

The frequency distribution below shows the distribution for checkout time (in minutes) in UMUC MiniMart between 3:00 PM and 4:00 PM on a Friday afternoon.

 

Checkout Time (in minutes)	Frequency
1.0 – 1.9	5
2.0 – 2.9	3
3.0 – 3.9	7
4.0 – 4.9	3
5.0 – 5.9	2

 

 

1.       What percentage of the checkout times was less than 4 minutes? (5 pts)

 

 

__________

 

2.       Calculate the mean of this frequency distribution. (10 pts)

 

__________

 

3.       In what class interval must the median lie? (You don’t have to find the median) (5 pts)

 

 

__________

 

 4.    Assume that the smallest observation in this dataset is 1.2 minutes.  Suppose this observation were

        incorrectly recorded as .2 instead of 1.2 minutes. (5 pts)

 

        Will the mean increase, decrease, or remain the same?

 

                                                                                                                                                                                ___________

 

        Will the median increase, decrease or remain the same?

 

                                                                                                                                                                                ____________

 

 

 

Refer to the following information for Questions 5 and 6

 

A 6-faced die is rolled two times.  Let A be the event that the outcome of the first roll is even.   Let B be the event that the outcome of the second roll is greater than 4.

 

 

5.    What is the probability that the outcomes of the second roll is greater than 4, given that the

       first roll is an even number? (10 pts)

 

 

                                                                                                                                                                                ____________

 

6.    Are A and B independent? (5 pts)

 

                                                                                                                                                                                ____________

 

 

Refer to the following data to answer questions 7 and 8.

 

A random sample of Stat 200 weekly study times in hours is as follows:

 

4,   14,   15,   17,   20

 

7.     Find the standard deviation. (10 pts)

 

 

                                                                                                                                                                             _____________

 

 

8.    Are any of these study times considered unusual in the sense of our textbook? (2.5  pts)

 

                                                                                                                                                                                _____________

 

      Does this differ with your intuition? (2.5 pts)

 

 

                                                                                                                                                                                _____________

Refer to the following situation for Questions 9, 10, and 11.

 

The five-number summary below shows the grade distribution of two STAT 200 quizzes.

 

	Minimum	Q1	Median	Q3	Maximum
Quiz 1	12	40	60	95	100
Quiz 2	20	35	50	90	100

 

 

For each question, give your answer as one of the following: (a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. (5 pts each)

 

9.    Which quiz has less interquartile range in grade distribution?

 

                                                                                                                                                                                _____________

 

 

10.   Which quiz has the greater percentage of students with grades 90 and over?

 

                                                                                                                                                                                _____________

 

 

11.   Which quiz has a greater percentage of students with grades less than 60?

 

 

                                                                                                                                                                                ____________

 

 

 

Refer to the following information for Questions 12 and 13.

 

There are 1000 students in the senior class at a certain high school. The high school offers two Advanced Placement math / stat classes to seniors only:  AP Calculus and AP Statistics.  The roster of the Calculus class shows 95 people; the roster of the Statistics class shows 86 people.  There are 43 overachieving seniors on both rosters.

 

12.    What is the probability that a randomly selected senior is in at least one of the two classes?

(10 pts)

 

 

                                                                                                                                                                                ____________

 

 

13.    If the student is in the Calculus class, what is the probability the student is also in the Statistics

          class? (10 pts)

 

                                                                                                                                                                                _____________

 

14.    A random sample of 225 SAT scores has a mean of 1500. Assume that SAT scores have a population

         standard deviation of 300.  Construct a 95% confidence interval estimate of the mean SAT scores.

        (15 pts)

 

                The proper distribution for calculating the Confidence Interval is:

                                                                                               

                                                                                                                Chi Square,         t distribution,     z distribution

 

                The lower and upper limits for the 95% confidence interval are:

 

 

 

                                                                                                                                ___________                   ___________  

 

Refer to the following information for Questions 15, 16, and 17.

 

A box contains 5 chips.  The chips are numbered 1 through 5.  Otherwise, the chips are identical.  From this box, we draw one chip at random, and record its value.  We then put the chip back in the box.  We repeat this process two more times, making three draws in all from this box.

 

15.    How many elements are in the sample space of this experiment? (5 pts)

 

 

                                                                                                                                                                                _____________

 

16.  What is the probability that the three numbers drawn are all different? (10 pts)

 

 

                                                                                                                                                                                _____________

 

17.   What is the probability that the three numbers drawn are all odd numbers? (10 pts)

 

 

                                                                                                                                                                                _____________

 Questions 18 and 19 involve the random variable x with probability distribution given below.

 

                                   

 

18.    Determine the expected value of x. (10 pts)

 

 

 

 

                                                                                                                                                                                _____________

 

19.   Determine the standard deviation of x. (10 pts)

 

 

 

 

                                                                                                                                                                                _____________

 

 

Consider the following situation for Questions 20 and 21.

 

Mimi just started her tennis class three weeks ago.  On Average, she is able to return 15% of her opponent’s serves.  If her opponent serves 10 times, please answer the following questions.

 

20.   Find the probability that she returns at most 2 of the 10 serves from her opponent. (10 pts)

 

 

                                                                                                                                                                                                                                                                                                                                                                                             _____________            

 

21.    How many seves is she expected to return? (5 pts)

 

 

                                                                                                                                                                                _____________

 

 

22. Given a sample size of 64, with sample mean 730 and sample standard deviation 80, we perform

       the following hypothesis test. (20 pts)

 

       Ho   μ= 750

       H1   μ < 750

 

What is the appropriate distribution for performing this Hypothesis test?

 

Z distribution,             t distribution,                  Chi Square distribution,             Empirical Rule

 

What is the critical value of the test statistic at α= 0.05 level?

 

                                                                                                                                                                                ____________

                Calculate the test statistic.

 

 

                                                                                                                                                                                ____________

 

What is the P-value for this Hypothesis Test?

 

                                                                                                                                                                _____________

 

What is your conclusion (decision) for this hypothesis test at α= 0.05 level?  

 

                                                                                                                Null Hypothesis                               Alternate Hypothesis

 

 

Refer to the following information for Questions 23, 24, and 25.

 

The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet.

 

23.    What is the probability that a randomly selected pecan tree is between 10 and 12 feet tall? (10 pts)

 

 

 

                                                                                                                                                                                _____________

24.    Find the 3^rd quartile of the pecan tree distribution. (5 pts)

 

 

                                                                                                                                                                                _____________

 

25.    If a random sample of 100 pecan trees is selected, what is the standard deviation of the sample mean?  (5 pts)

 

                                                                                                                                                                                _____________

26.          Consider the hypothesis test given by

 

Ho   μ   =   530

H1   μ   ≠   530

 

In a random sample of 81 subjects, the sample mean is found to be 524.  Also, the population standard deviation is σ= 27. (20 pts)

 

Calculate the Test Statistic.

 

 

 

 

                                                                                                                                                                ____________

 

What is the P-value for this test?

 

 

 

 

                                                                                                                                                                ____________

 

 

 

Is there sufficient evidence to justify the rejection of Ho at α= 0.01 level?

 

 

 

Do not reject the Null Hypothesis

 

Accept the Alternate Hypothesis

 

                                There is insufficient evidence to make a decision

 

 

 

27.    A certain researcher thinks that the proportion of women who say that the earth is getting warmer

          is greater than the proportion of men. (25 pts)

 

          In a random sample of 250 women, 70% said that the earth is getting warmer.

          In a random sample of 220 men, 68.18% said that the earth is getting warmer.

 

          At the .05 significance level, is there sufficient evidence to support the claim that the proportion of

          women saying the earth is getting warmer is higher than the proportion of men saying the earth is

          getting warmer?

 

What is the Null Hypothesis?

 

 

                                                                                                                                                _____________

What is the Alternate Hypothesis?

 

 

                                                                                                                                                _____________

 

                                                                                                                               

What is the numerical value of z critical?

 

                                                                                                                                                _____________

 

What is the numerical value of the test statistic?

 

 

 

 

                                                                                                                                                _____________

 

What is the P-value for this Hypothesis test?

 

                                                                                                                                                _____________

 

What is your decision based upon this Hypothesis test?

 

                                                                                                                                                _____________

 

 

 

Refer to the following data for Questions 28 and 29.

 

X	0	– 1	1	2	3
Y	4	– 2	5	6	8

                           

 

28.    Find an equation of the least squares regression line. (15 pts)

 

 

 

 

 

What is the Y intercept of the equation?

 

                                                                                                                                                _____________

 

What is the slope of the equation?

 

                                                                                                                                                _____________

 

 

 

                                                                                                                                   Y = ______  + ______x

 

Answer the following questions to receive full credit for this problem.

 

 

∑x =  _______,                                 ∑y =   _______,                                ∑x² =  _______,                                ∑xy =   _______

 

 

29           Using the equation you calculated in question 28 What is the predicted value of y if x=4? (10 pts)

 

 

 

                                                                                                                                                                                ___________

 

30.    The UMUC Daily News reported that the color distribution for plain M&M’s was: 40% brown, 20%          yellow, 20% orange, 10% green, and 10% tan.  Each piece of candy in a random sample of 100 plain          M&M’s was classified according to color, and the results are listed below.  Use a 0.05 significance          level to test the claim that the published color distribution is correct. (25 pts)

 

Color	Brown	Yellow	Orange	Green	Tan
Number	45	13	17	7	18

 

 

What is the Null Hypothesis?

 

                                                                                                                                                __________________

 

What is the Alternate Hypothesis?

 

 

                                                                                                                                                __________________

 

What is the degrees of freedom for this Hypothesis test?

 

                                                                                                                                                __________________

 

What is the numerical Chi Square critical value?

 

                                                                                                                                                __________________

 

What is the numerical value of the Chi Square test statistic?

 

 

                                                                                                                                                __________________

 

 

 

Having completed the Hypothesis test what is the appropriate decision?

 

 

                                                                                                Null Hypothesis                                Alternate Hypothesis                    

 

 

 

31.          Please note:  Each time you re-due the Final Exam the answer to question 31 may change, but the subject matter and format will not change.

 

                Example question:

 

Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below. (1 pt)

 

                A woman experienced a tax audit.  The tax department claimed that the woman was audited because she was randomly selected from all taxpayers.

 

                What type of sampling did the tax department use?

 

32.          Problem 32 is the Honor Pledge.  This question must be answered (truthfully) in the positive in order to receive credit for taking the Final Exam.

 

                                                            

 

On October 16, 2015, groups in Dr. Tawfik’s Transportation Engineering laboratory were prompted to hypothesize what a company or developer might need to do during the planning process of implementing a Solar Personal Rapid Transit (PRT) system in Fresno, California. The main question that the groups needed to ask themselves was, “What variables will you need to estimate the impact on a transportation system by the PRT project?”

Each of the groups had their own unique ways of interpreting this question. The group that I was a part of wanted to try and identify the variables necessary to evaluate the destination routes, economic evaluation, effects on transportation system, repercussions, and target year. We broke these categories up into two parts. We figured that to make any estimates, we would need to know what kind of data would be needed and a plan on how to collect that data.

The destination route data we would need was population density for various zones in the city, current and future land development, and current location of bus stations. We figured that we could collect said data using census records, speaking with city planners, surveying the population and research current popular bus stations. Group number 5 also had a great idea that pertains to routing decisions. They proposed contacting employers and asking them where their employees lived. This would help them plan for future commuting of employees.

Our group hypothesized that to estimate the economic evaluation we would need to estimate cost of construction per mile, profit, maintenance costs, and efficiency. We figured that a material analysis would be necessary to estimate cost per mile. We could use projected usage rates to estimate profit and to estimate maintenance and efficiency we would contact previous pilot programs and ask them about their current economic data. Group 2 stated that if public approval was not extremely high, we would need to have a long line of investors to fund the project initially.

To estimate the effects on the transportation system, we theorized that we would need quantify the number of people using public transportation currently, what other forms of transportation people are using, and number of people walking or biking for commuting purposes. To collect this information, we could utilize surveys, contact public offices, and again contact previous PRT programs. Group 3 proclaimed that the implementation of this PRT system would reduce traffic on roads therefore reducing maintenance necessary on the roads.

What could possibly be repercussions of this system though? My group argued that we would need to analyze other PRT systems in use so that the repercussions of the system would not be based on pure insight but have defined fact behind it. We thought that surveying the population of cities of whom have PRT systems and see what they thought about the pros and cons. Group 4 believed that there would be a decrease in emissions due to the lower amount of cars in use. This would be a positive repercussion however there would be negative as well. With this system being solar, there would have to be legislation implemented to ensure sunlight exposure to the power cells. This could have a negative repercussion on new infrastructure because there would be a limit to how tall a building could be.

My group believed that this project would be a “medium” time span project meaning that it would take 10 to 15 years from the first days of planning to the final days of construction.

Background Story: Please focus on social capital. Provide a brief review of what has been said in the published literature about the issue you are addressing. Then, discuss how your study is connected to the earlier studies and how it builds upon them. Cite all references at the end of the report. 

 

page 1

The issue that rotary club has is why the club is losing memberships and statistics has been shown in the published literature that loosing membership by following reasons: “Lack of leadership agreement on purposes and goals. Loss of desire and initiative to make the necessary changes. Losing sight of the overall objective and Failure to properly educate and communicate with all involved” (Henry 1). It indicates the listed problems are the major ones that rotary club needs to be solved in order to gain more memberships and maintain the old members. Based on the information study, the connected solutions to those major problems have been indicated.

First of all, the organization needs to be more effective and efficient in cooperation of various instead of just one-person show in order to converse membership failure. The leaders of rotary can form an agreement to gain members’ trust and show them the determination of the leaders that they are able to satisfy their members’ needs and further advancing the purpose of rotary. Second, establish a powerful partnership can make members to have good faith to the organization. But the problem is the club should not omit the time when they are trying to build a partnership. Also new members would think the partnership size will be connected to the club size that larger the partnership can attract new members and keep the old ones. Furthermore, to build an association within a good rational length of time can make members to believe all works are achievable when they worked together to outline the ideas. Third, “success breeds success” (Henry 2). Organization should get more and more people and members involved into proper celebrations with short-term success that make them to keep focus on the vision of club accomplishment. It also can build a timely milestone as motivation.

Nevertheless, communication is one of the most important ways to bind all the members together. Also communication failure may cost many problems that finally makes the club apart because improper ways to communicate with each other would make people loose their trust from other people.  So communicate appropriately, faithfully and correctly are necessary for organizations and clubs to updates to all people involved. In addition, getingt all the obstacles out of the way. Sometimes, problems can motivate people on their path to success, but most of the time are not because nobody likes problems. So organizations should move all the questions and barriers from members that could stop them from being successful. Otherwise, it could costs more people to leave the organization because they don’t feel like getting things done in such organization. Also, when obstacles occurred, leaders of organization will need to make harder decisions. So it is bad for both side, and the best method for it is to move all the problems out of the way. Lastly, never blame on people to accomplish the assignment too soon. All members would have their own goals in the organization. So when they are trying their best to finish the assignment, the organization should celebrate with them instead of complaining the assignment is not done well enough.

All in all, all the information have been listed above are the connected solustions based on the early study.

 

word cited: 

 

Henry, J. (2009, April 13). A Series of Eight Articles on Reversing a Membership Freefall. Retrieved December 10, 2014, from http://www.directory-online.com/Rotary/accounts/6910/Pages/uPages/Membership/Downloads/reversing_freefall.pdf

page 2

Based on the results, it showed us that social capital has the most predictive power in explaining intention to participate in voluntary organization. 

Social capital is defined as the networks of relationships among people who live and work in a particular society, enabling that society to function effectively. Also can be difined as the institutions, relationships, and norms that shape the quality and quantity of a society’s social interactions. 

The issue we have been addressing is that why rotary club is losing membership.

Nowadays people are living in busy modern lifes meaning that limited time for volunteer and membership activities after their work and family obligations. 

There were used to be many common-interest groups or associations that were formed in pre-internet days, for the main purpose of sharing information that would have been otherwise hard to come by. now that there are a lot of websites and other web sources which offers people a lot of information. people can get those information even if they do not join the associations. 

The Rotary club is for the people who owns the business or people who work as a business man or woman who wants to grow their business. 

The growth of economies has been downsizing due to many reasons and in order to join the rotary club, the members need to pay the fee in order to be a maintained member. because of the downsizing of the economy people are not attracted to join the clubs anymore. 

The reasons are, one, because people do not want to spend the extra money other than essential goods. two, because people can get a lot of informations from a lot of web sources which makes them to think do not need to join the clubs anymore. 

Another reason why people do not join the organizations anymore is that people do not have enough time to do much of anything for themselves, so that means they do not have enough time to join the group activities. Many of them now have families of their own with young children, and their lives are basically consumed by their children’s activities, school, sports practice, dance lessons, tutoring, all the while, trying to balance a career and have a social life. if you think about it, it is very hard to find a leisure time and join the organizations. 

it is not about lack of interest of joining the clubs but more about lack of time. People would love to be part of the communities, societies, or clubs, but they just do not have enough time to join it. 

Putnam, R. (1982, February 1). Retrieved from http://xroads.virginia.edu/~HYPER/detoc/assoc/bowling.html

 

http://xroads.virginia.edu/~HYPER/detoc/assoc/bowling.html

Question 1 of 25 1.0 Points

Since the population is always larger than the sample, the population mean:
A. is always smaller than or equal to the sample mean
B. is always larger than or equal to the sample mean
C. can be smaller than, or larger than, or equal to the sample mean
D. is always strictly less than the sample mean

Question 2 of 25 1.0 Points

What is the probability of drawing two queens in a row from a standard deck of cards without replacement?
A. 0.0045
B. 0.0059
C. 0.0015
D. 0.0385

Question 3 of 25 1.0 Points

If one tosses a coin enough times, the proportion of “heads” will approach 0.5. This is an example of:
A. the Law of Large Numbers
B. subjective probabilities
C. the Empirical Rule
D. the Central Limit Theorem

Question 4 of 25 1.0 Points

Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30.

What is the probability that fewer than 40 batteries will last at least 8 hours?
A. 0.7986
B. 0.0789
C. 0.9598
D. 0.9211

Question 5 of 25 1.0 Points
Which term is NOT synonymous with the expected value of a discrete probability distribution?
A. μ
B. mean
C. theoretical average
D. variance

Question 6 of 25 1.0 Points

A discrete probability distribution:
A. lists all of the possible values of the random variable and their corresponding probabilities
B. can be estimated from long-run proportions
C. is a tool that can be used to incorporate uncertainty into models
D. is the distribution of multiple random variables

Question 7 of 25 1.0 Points
The normal distribution is:
A. a discrete distribution
B. the single most important distribution in statistics
C. a binomial distribution with only one parameter
D. a density function of a discrete random variable

Question 8 of 25 1.0 Points

The mean of a probability distribution can be:
A. a positive number
B. a negative number
C. zero
D. all of the above

Question 9 of 25 1.0 Points
The standard normal distribution has a mean of ___ and standard deviation of ___, respectively.
A. 0 and 1
B. 1 and 1
C. 1 and 0
D. 0 and 0

Question 10 of 25 1.0 Points
The standard deviation of a probability distribution must be:
A. a negative number
B. a number between 0 and 1
C. less than the value of the mean
D. a nonnegative number

Question 11 of 25 1.0 Points
The theorem that states that the sampling distribution of the sample mean is approximately normal when the sample size n is reasonably large is known as the:
A. central tendency theorem
B. simple random sample theorem
C. central limit theorem
D. point estimate theorem

Question 12 of 25 1.0 Points
If Z is a standard normal random variable, the area between z = 0.0 and z =1.30 is 0.4032, while the area between z = 0.0 and z = 1.50 is 0.4332. What is the area between z = -1.30 and z = 1.50?
A. 0.0668
B. 0.0968
C. 0.0300
D. 0.8364

Question 13 of 25 1.0 Points
A statistics professor has just given a final examination in his statistical inference course. He is particularly interested in learning how his class of 40 students performed on this exam. The scores are shown below.
77 81 74 77 79 73 80 85 86 73
83 84 81 73 75 91 76 77 95 76
90 85 92 84 81 64 75 90 78 78
82 78 86 86 82 70 76 78 72 93

Compute the standard deviation of these test scores. Place your answer, rounded to 2 decimal places in the blank. For example, 5.34 would be a legitimate entry.

Question 14 of 25 1.0 Points
Find the mean of the following probability distribution?
1 0.20
2 0.10
3 0.35
4 0.05
5 0.30

Place your answer, rounded to two decimal places, in the blank. When entering your answer do not use any labels or symbols other than a decimal point. Simply provide the numerical value. For example, 1.23 would be a legitimate entry.

Question 15 of 25 1.0 Points
In February 2002 the Argentine peso lost 70% of its value compared to the United States dollar. This devaluation drastically raised the price of imported products. According to a survey conducted by AC Nielsen in April 2002, 68% of the consumers in Argentina were buying fewer products than before the devaluation, 24% were buying the same number of products, and 8% were buying more products. Furthermore, in a trend toward purchasing less-expensive brands, 88% indicated that they had changed the brands they purchased. Suppose the following complete set of results were reported. Use the following data to answer this question.

 

Number of Products Purchased
Brands Purchased Fewer Same More Total
Same 10 14 24 48
Changed 262 82 8 352
Total 272 96 32 400

What is the probability that a consumer selected at random purchased fewer products than before? Place your answer, rounded to 4 decimal places, in the blank.

Question 16 of 25 1.0 Points

Mothers Against Drunk Driving (MADD) is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasized the problem we all face with drinking and driving. Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:
Number of Vehicles Involved
Did alcohol play a role? 1 2 3
Yes 60 110 30 200
No 40 215 45 300
100 325 75

What proportion of accidents involved alcohol and a single vehicle?
Place your answer, rounded to 2 decimal places, in the blank. For example, 0.23 is a legitimate entry.

Question 17 of 25 1.0 Points

A daily lottery is conducted in which two winning numbers are selected out of 100 numbers. How many different combinations of winning numbers are possible? Place your answer in the blank. Do not use any decimal places or commas. For example, 45 would be a legitimate entry.

Question 18 of 25 1.0 Points

The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound shaped and symmetric with a mean of 25.9 mpg and a standard deviation of 9.5 mpg. If 30 such cars are tested, what is the probability the average mpg achieved by these 30 cars will be greater than 28? Place your answer, rounded to 4 decimal places, in the blank.

Question 19 of 25 1.0 Points

A set of final exam scores in an organic chemistry course was found to be normally distributed, with a mean of 73 and a standard deviation of 8.

What is the probability of getting a score between 65 and 89 on this exam? Place your answer, rounded to 4 decimal places in the blank. For example, 0.3456 would be a legitimate entry.

Question 20 of 25 1.0 Points

A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9.

What is the probability that a randomly selected customer will spend $20 or more at this store? Place your answer, rounded to 4 decimal places, in the blank. For example, 0.3456 would be a legitimate entry.

Question 21 of 25 1.0 Points

The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with mean 6.7 minutes and standard deviation 2.2 minutes. For a door selected at random, what is the probability the assembly line time will be between 5 and 10 minutes? Place your answer, rounded to 4 decimal places, in the blank. For example, 0.1776 would be a legitimate answer.

Question 22 of 25 1.0 Points

A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9.

What is the probability that a randomly selected customer will spend less than $15 at this store? Place your answer, rounded to 4 decimal places, in the blank. For example, 0.3456 would be a legitimate entry.

Question 23 of 25 1.0 Points

Scores on a mathematics examination appear to follow a normal distribution with mean of 65 and standard deviation of 15. The instructor wishes to give a grade of “C” to students scoring between the 60th and 70th percentiles on the exam.

What score represents the 60th percentile score on the mathematics exam? Place your answer in the blank, rounded to a whole number. For example, 62 would be a legitimate entry.

Question 24 of 25 1.0 Points

Using the standard normal curve, the Z- score representing the 10th percentile is 1.28. True
False

Question 25 of 25 1.0 Points

The left half under the normal curve is slightly smaller than the right half. True
False

Additional Requirements

Level of Detail: Only answer needed

A lack of awareness of cultural differences or the assumption by one cultural group that another is inferior often results in painful personal and social encounters.  This thesis is applied from the beginning to the very end of the play “Trifles” by Susan Glaspell.  The men and women clearly view and treat the opposite sex in a sarcastic and inferior manner.   Mr. Henderson, the county attorney, shows examples of this quite often.  “Well, women are used to worrying over trifles.”  (Baym, 2013. Pg. 1930) Trifles are an article or thing of little value or importance.  “Ah, loyal to your sex. I see.” (Baym, 2013. Pg. 1930) Mr. Henderson made this snide remark when Mrs. Hale tried to defend Mrs. Wright’s housekeeping.  The men even have too much pride in asking the women to help look for clues in the investigation of Mr. Wright’s death.  If the men in the play did not view women as being inferior they would know that “we all go through the same things- it’s all just a different kind of the same thing”, they could have figured out that Mrs. Wright killed Mr. Wright and what her motive was. (Baym, 2013. Pg. 1935) The women, Mrs. Peters and Mrs. Hale, found all of the clues in Mr. Wright’s murder.  They found the quilt that started out “nice and even”, then ended up “all over the place.  They found the bird that went with the cage with its neck wrung.  When the county attorney asked about the bird, the women lied and said, “we think the – cat got it.” (Baym, 2013. Pg. 1934) Even with having all the clues to the murder the women still find a way to hide the evidence because of how the men acted towards them.