Chapter 4, Problem 62CP

Comparing female and male students You plan to sample from the 3500 undergraduate students who are enrolled at the University of Rochester to compare the proportions of female and male students who would like to see the United States elect a female president.

1. a. Describe the steps for how you would proceed if you plan a simple random sample of 80 students. Illustrate by picking the first three students for the sample.
2. b. Suppose that you use random numbers to select students but stop selecting females as soon as you have 40, and you stop selecting males as soon as you have 40. Is the resulting sample a simple random sample? Why or why not?
3. c. What type of sample is the sample in part b? What advantage might it have over a simple random sample?