(Answered) A car company says that the mean gas mileage for its luxury

Statistics

A car company says that the mean gas mileage for its luxury sedan is at least 20 miles per gallon? (mpg). You believe the claim is incorrect and find that a random sample of 8 cars has a mean gas mileage of 17mpg and a standard deviation of 5mpg. At α=0.10, test the? company's claim. Assume the population is normally distributed.

Which sampling distribution should be used and? why?
State the appropriate hypotheses to test.
What is the value of the standardized test? statistic?(Round two decimal places as needed)
What is the critical? value?(Round three decimal places as needed)
What is the outcome and the conclusion of this? test?

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