A car manufacturer claims that a new model QX has an average fuel efficiency µ =35 miles per gallon on the highway, and a standard deviation σ=5. The American Automobile Association randomly selects 16 new QXs and measures their fuel efficiency at 33 miles per gallon. Is the car manufacturer truthful in advertising QX’s fuel efficiency as being 35 miles per gallon, assuming =0.05?

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Q: The Central Intelligence Agency (CIA) has specialists who analyze the frequencies of letters of the…

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A: Solution

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