11) An automobile manufacturer advertises that one of its models of cars achieves 32 miles per gallon for highway driving. A consumer advocacy group claims that the advertisement is incorrect and selects a random sample of 28 nonprofessional drivers and each one drives the car from West Windsor, NJ to Washington, DC. The mean miles per gallon was determined to be 30.76 mpg with a standard deviation of 2.32. Assuming fuel efficiency is normally distributed under these circumstances, test the advocacy's claim at a = 0.10. (Show all steps.)

11) An automobile manufacturer advertises that one of its models of cars achieves 32 miles per gallon for highway driving. A consumer advocacy group claims that the advertisement is incorrect and selects a random sample of 28 nonprofessional drivers and each one drives the car from West Windsor, NJ to Washington, DC. The mean miles per gallon was determined to be 30.76 mpg with a standard deviation of 2.32. Assuming fuel efficiency is normally distributed under these circumstances, test the advocacy's claim at a = 0.10. (Show all steps.)

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MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

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Emor, or a correct decision, if in fact the average math SAT score of students at
the school is equal not to 520,
11) An automobile manufacturer advertises that one of its models of cars achieves 32 miles per gallon for
highway driving. A consumer advocacy group claims that the advertisement is incorrect and selects a
random sample of 28 nonprofessional drivers and each one drives the car from West Windsor, NJ to
Washington, DC. The mean miles per gallon was determined to be 30.76 mpg with a standard deviation
of 2.32. Assuming fuel efficiency is normally distributed under these circumstances, test the advocacy's
claim at a = 0.10. (Show all steps.)

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