Aparticular brand of dishwasher soap is sold in three sizes: 25 oz, 45 oz, and 60 oz. twenty percent of all purchasers select a 25-oz box, 50% select a 45-oz box, and the remaining 30% choose a 60-oz box. let x1 and x2 denote the package sizes selected by two independently selected purchasers. (a) determine the sampling distribution of x. x 25 35 45 42.5 52.5 60 p(x) calculate e(x). e(x) = oz compare e(x) to μ. e(x) > μ e(x) < μ e(x) = μ