Consider the information presented in the introductory case of this chapter. Recall that Anne Jones wants to determine if the marketing campaign has had a lingering effect on the proportion of customers who are women and teenage girls. Prior to the campaign, 43% of the customers were women and 21% were teenage girls. Based on a random sample of 50 customers after the campaign, these proportions increase to 46% for women and 34% for teenage girls. Anne has the following questions.

a. If Starbucks chose not to pursue the marketing campaign, how likely is it that 46% or more of iced-coffee customers are women?

b. If Starbucks chose not to pursue the marketing campaign, how likely is it that 34% or more of iced-coffee customers are teenage girls? L056