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Suppose that a population variable is known to be Normally distributed with mean u = 15 and standard deviation o = 15 . If the

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Suppose that a population variable is known to be Normally distributed with mean u = 15 and standard deviation o = 15 . If the sample size used is to be n = 50, what is the probability that the sample mean will be greater than 13.0? Express your answer with accuracy up to four decimal places

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