Comparing two treatments. Suppose nl people are given treatment 1 and independently n2 people are given treatment 2. Let X1 be the number of people on treatment 1 who respond favorably to the treatment and let X2 be the number of people on treatment 2 who respond favorably. Assume that Xl ~ Binom(nl , p1 ) and independently X2 ~ Binom(n2 , p2 ). The parameter of interest is q = p1 - p2 . a) Find the MLE M of q. b) Find (M) and then use Wald method to derive an asymptotic CI for