Multiple Choice
The tread life of tires mounted on light duty trucks follows the normal probability distribution with a mean of 60,000 miles and a standard deviation of 4,000 miles. Suppose you bought a set of four tires, what is the likelihood the mean tire life of these four tires is more than 66,000 miles?
A) 0.0013
B) 0.9987
C) 0.4987
D) 0.9544
Correct Answer:
Verified
Correct Answer:
Verified
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