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26. The lifetime in miles for a certain brand of tire is normally distributed with a mean of 22,000 miles and a standard deviation of

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26. The lifetime in miles for a certain brand of tire is normally distributed with a mean of 22,000 miles and a standard deviation of 3,100 miles The tire manufacturer wants to offer a money-back guarantee so that no more than 3% of tires will qualify for a refund. What is the minimum number of miles the manufacturer should guarantee that the tires will last

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