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A population of values has a normal distribution with 77 and 95 1 a Find the probability that a single randomly selected value is between

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A population of values has a normal distribution with 77 and 95 1 a Find the probability that a single randomly selected value is between 39 3 and 75 2 Round your answer to four decimal places P 39 3 X 75 2 b Find the probability that a randomly selected sample of size n 28 has a mean between 39 3 and 75 2 Round your answer to four decimal places P 39 3 M 75 2

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