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The Life Expectancy of a Particular Brand of Tire Is

Question 19

Multiple Choice

The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and a standard deviation of 5,000 miles.What is the probability that a randomly selected tire will have a life of at least 30,000 miles?


A) 0.4772
B) 0.9772
C) 0.0228
D) 0.5000

Correct Answer:

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