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 2100 miles. What is the
Probability a particular tire of this brand will last longer than 57,900 miles?
A) .2266
B) .1587
C) .8413
D) .7266
Correct Answer:

Verified
Correct Answer:
Verified
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