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## 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

Question

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?

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Math
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2021-09-09T09:26:23+00:00
2021-09-09T09:26:23+00:00 1 Answer
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## Answers ( )

Answer: 0.0013Step-by-step explanation:Given : The test scores are normally distributed withMean :

Standard deviation :

Sample size :

The formula to calculate the z-score :-For x = 66,000The p-value =Hence, the likelihood the mean tire life of these four tires is more than 66,000 miles = 0.0013