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....
2 Points each
a. What is the probability that a randomly selected tire will have a life of no more than 50,000 miles?
b. What is the probability that a randomly selected tire will have a life of at least 47,500 miles?
c. What percentage of tires will have a life of 34,000 to 46,000 miles?
d. What is the probability that a randomly selected tire will have a life of exactly 47,500 miles?
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