A car company says that the mean gas mileage for its luxury sedan is at least 20miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 77 cars has a mean gas mileage of 19mpg and a standard deviation of 33 mpg. At α=0.10, test the company\\\'s claim. Assume the population is normally distributed.

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Which sampling distribution should be used and why?

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Which sampling distribution should be used and why Z distribution should be used hereThi... View the full answer