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Suppose the dispatch company purchased only 20 Geroy Vans.If the sample mean and standard deviation are 34.2 and 3.9 mpg respectively, test the hypotheses that

Suppose the dispatch company purchased only 20 Geroy Vans.If the sample mean and standard deviation are 34.2 and 3.9 mpg respectively, test the hypotheses that the population mean fuel efficiency of the Vans is 35 mpg. Use 10% level of significance.

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