Question
Suppose x has a distribution with = 28 and = 27. I USE SALT (a) If a random sample of size n = 35
Suppose x has a distribution with = 28 and = 27. I USE SALT (a) If a random sample of size n = 35 is drawn, find , and P(28 x 30). (Round ox to two decimal places and the probability to four decimal places.) P(28 x 30) = (b) If a random sample of size n = 68 is drawn, find x, x and P(28 x 30). (Round to two decimal places and the probability to four decimal places.) P(28 x 30) = (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-- part (a) because of the ---Select--- sample size. Therefore, the distribution about is ---Select---
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