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Mathematics, 22.10.2020 02:01 angelteddy033
7. The lifetime of a certain brand of tires is approximately normally distributed, with a
mean of 40,000 miles and a standard deviation of 2,500 miles under normal driving conditions.
Tire wear is greatly affected by road, weather and driver conditions along with proper
maintenance of the tires. A driver who aggressively accelerates or makes quick stops, for
example, will wear out a tire much more quickly. The brand carries a warranty of 33,000 miles
under normal driving conditions, i. e., the company will replace a tire if it wears out before this
mileage limit is reached.
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7. The lifetime of a certain brand of tires is approximately normally distributed, with a
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