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A simple random sample of size n = 81 is obtained from a population with u = 74 and o = 36. (a) Describe the

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A simple random sample of size n = 81 is obtained from a population with u = 74 and o = 36. (a) Describe the sampling distribution of x. (b) What is P (x > 81) ? (c) What is P (x $ 64.2) ? (d) What is P (68 81) = (Round to four decimal places as needed.)

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