Bulimia study. Refer to the American Statistician (May 2001) study comparing the “fear of negative evaluation”

(FNE) scores for bulimic and normal female students, presented in Exercise 9.19

(p. 477). Suppose you want to estimate 1mB - mN2, the difference between the population means of the FNE scores for bulimic and normal female students, using a 95% confidence interval with a sampling error of two points. Find the sample sizes required to obtain such an estimate. Assume equal sample sizes of sB 2

= sN 2

= 25.