Suppose x has a distribution with = 28 and = 21. A button hyperlink to the SALT program that reads: Use SALT. (a) If a random sample of size n = 43 is drawn, find x, x and P(28 x 30). (Round x to two decimal places and the probability to four decimal places.) x = x = P(28 x 30) = (b) If a random sample of size n = 74 is drawn, find x, x and P(28 x 30). (Round x to two decimal places and the probability to four decimal places.) x = x = P(28 x 30) =