During routine conversations, the CEO of a new start up reports that 15% of adults between the ages of 21
During routine conversations, the CEO of a new start up reports that 15% of adults between the ages of 21 and 39 will purchase her new product. Hearing this, some investors decide to conduct a large scale study, hoping to estimate the proportion to within 5% with 90% confidence. How many randomly selected adults between […]

