Cheating during a test. A national survey of high school students conducted by the Josephson Institute of Ethics was sent to 43,000 high school students, and 40,774 were returned. One question asked students if they had cheated during a test in the last school year.15 Of those who returned the survey, 14,028 responded that they had cheated at least two times in the last year.
(a) What is the sample proportion of respondents who cheated at least twice?
(b) Compute the 95% confidence interval for the true proportion of students who have cheated on at least two tests in the last year.
(c) Compute the nonresponse rate for this study. Does this influence how you interpret these results? Write a short discussion of this issue.