At the 005 level of significance test the manufacturers

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Question: In a study of distances travelled by buses before the first major engine failure, a sampling of 191 buses resulted in a mean of 154,700 km and a standard deviation of 60,000 km. At the 0.05 level of significance, test the manufacturer's claim that mean distance travelled before a major engine failure is more than 144,000 km.

Reference no: EM13578855

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