A trucking firm suspects that the mean life of
Question # 00286115
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Updated on: 05/16/2016 04:28 PM Due on: 06/15/2016
- A trucking firm suspects that the mean life of a certain tire it uses is less than 35,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 34,350 miles with standard deviation of 1200 miles. At α = 0.05, test the trucking firm’s claim.
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Solution: A trucking firm suspects that the mean life of