The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 30,641 miles, with a variance of 14,561,860   What is the probability that the sample mean would be less than 31,358miles in a sample of 242 tires if the manager is correct? Round your answer to four decimal places.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 30,641 miles, with a variance of 14,561,860

 

What is the probability that the sample mean would be less than 31,358miles in a sample of 242 tires if the manager is correct? Round your answer to four decimal places.

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