Suppose that you determine the proportion of students who are depressed at thebeginningof the academic year and again at theendof the academic year. (Note that the same group of students is tested on both occasions.) Which of the following should you use to test the null hypothesis that the proportion of depressed students is the same at the beginning and end of the year?

Group of answer choices

McNemar's chi square

Cochran's Q

Fisher's Exact test

Pearson chi-square