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Probability that the mean of a sample

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The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3643 miles, with a variance of 196,249

If he is correct, what is the probability that the mean of a sample of 40 cars would be less than 3675 miles? Round your answer to four decimal places.

Reference no: EM131886924

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