In six test runs a truck operated 8 10 15 7 9 and 11miles, Ask an Expert

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In six test runs, a truck operated 8, 10, 15, 7, 9, and 11miles with one gallon of gasoline. At the 95% level of confidence, is this sufficient evidence to show that the truck is operating at a mean rate of about 13.1 miles per gallon (CI)?

A. Yes.

B. No.

C. Can not be determined.

D. None of the above

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