Question: Suppose a professor wants to assess whether or not there is any difference in the final grade distributions (A, B, C, D, and F) between males and females in a particular class. To assess the null hypothesis that there is no difference between these distributions, the professor carries out a chi-squared test.
(a) Discuss how the professor carried out this test.
(b) If the professor obtained evidence against the null hypothesis, discuss what concerns you have over the use of the chi-squared test.