MY NOTES ASK YOUR TEAC Suppose x has a distribution with u = 27 and o = 21. LA USE SALT (a) If a random sample of size n = 35 is drawn, find u , o - and P(27 5 x S 29). (Round of to two decimal places and the probability to four decimal places.) P(27 S X S 29) = (b) If a random sample of size n = 68 is drawn, find u-, o - and P(27 5 x $ 29). (Round o - to two decimal places and the probability to four decimal places.) P(27 S X S 29) = (c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).) The standard deviation of part (b) is -Select- v part (a) because of the -Select- | sample size. Therefore, the distribution about , is -Select- Need Help? Read It Watch It Submit