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Given a normal population whose mean is 615 and whose standard deviation is 79, find...

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Given a normal population whose mean is 615 and whose standard deviation is 79, find each of the following:A. The probability that a random sample of 7 has a mean between 631 and 642.Probability =B. The probability that a random sample of 15 has a mean between 631 and 642.Probability =C. The probability that a random sample of 29 has a mean between 631 and 642.Probability =

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