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Which sampling distribution should be used and? why

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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?

Reference no: EM131599509

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