Question: Exercise presented results of a survey asking college students whether they would return the money if they found a wallet on the street. Of the 93 women, 84 said they would, and of the 75 men, 53 said they would. Assume that these students represent all college students. Test the null hypothesis that equal proportions of college men and women would say that they would return the money versus the alternative hypothesis that a higher proportion of women would do so. Use a = .05. (Data source: UCDavis2 dataset on the companion website).
Exercise: A sample of college students was asked whether they would return the money if they found a wallet on the street. Of the 93 women, 84 said "yes," and of the 75 men, 53 said "yes." Assume that these students represent all college students (Data source: UCDavis2 dataset on the companion website).
a. Find separate 95% confidence intervals for the proportions of college women and college men who would say "yes" to this question.
b. Find a 95% confidence interval for the difference in the proportions of college men and women who would say "yes" to this question.
c. Write a few sentences interpreting the intervals in parts (a) and (b).