Only complete question 2

Showing your work and how you reached the answer is critical in receiving your grade…simply putting down values as the final answer will not earn you any points.

2. The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Assume the mileage wear follows the normal distribution and the standard deviation of the distribution is 5,000 miles. Crosset Truck Company bought 48 tires and found that the mean mileage for its trucks is 59,500 miles. Is Crosset’s experience different from that claimed by the manufacturer at the .05 significance level?

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Posted on May 11, 2016Author TutorCategories Question, Questions