The Tread Life of a Particular Brand of Tire Is

question 100

Multiple Choice

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 3000 miles. What warrantyshould the company use if they want 96% of the tires to outlast the warranty?

• A) 65,250 miles
• B) 54,750 miles
• C) 57,000 miles
• D) 63,000 miles

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