Suppose x has a distribution with ,u = 19 and a = 16. la USE SALT (a) If a random sample of size n = 48 is drawn, find 14;: a; and P(19 s E s 21). (Round 0; to two decimal places and Ens.pr.9.b.a.b.i.|.i.tx..t.9 four decimal places.) ; =: I ix _ _' Enter an exact number. X P(19 sis 21) = (b) If a random sample of size n = 59 is drawn, nd p}, 0' )7 and P(19 s )7 s 21). (Round 0; to two decimal places and the probability to four decimal places.) H; = a )7 = P(19 525 21) =