Gas Mileage A car company says that the mean gas mileage for its luxury sedan is at
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Gas Mileage A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 22 mpg and a standard deviation of 4 mpg. At test the company’s claim. Assume the population is normally distributed.
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780321693624
5th Edition
Authors: Ron Larson, Betsy Farber
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