2) In towns A,B,C,D,and E the prevalence of appendectomies is 2.1%, 2.9%, 3.1%, 3.3%, and 3.9%. a) Calculate the coefficient of variation for these 5 towns. [10 points} b} According to Phelps is there agreement among surgeons on the marginal benefit of appendectomies across these towns. Explain. {5 points) c) Town F is added to the study and has a prevalence of appendectomies of 3.2%. Calculate the coefcient of variation for these 6 towns. {10 points) d} Does this change 1your answer to h) above? [5 points}