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Alpine Tire Company has determined from road tests that the mean mileage of its main product is 50,000 miles with a standard deviation of 5,000
- Alpine Tire Company has determined from road tests that the mean mileage of its main product is 50,000 miles with a standard deviation of 5,000 miles, and that the collected data are normally distributed. Alpine wishes to offer a warrantee providing free replacement for any new tire that fails before the guarantee mileage.
a. If Alpine wishes to replace no more than 10% of the tires, what should the guarantee mileage be? (6points)
b. In addition, the data collected indicate that the normal distribution is a reasonable assumption. What is the probability that the tire mileage will exceed 50,500miles? (4points)
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