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The mean lifetime of a tire is 39 months with a standard deviation of 10 months. If 118 tires are sampled, what is the probability

The mean lifetime of a tire is 39 months with a standard deviation of 10 months.

If 118 tires are sampled, what is the probability that the mean of the sample would be greater than 40.39 months? Round your answer to four decimal places.

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