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It Is of Interest to a Harley Davidson Dealer to Know

Question 258

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It is of interest to a Harley Davidson dealer to know the average gas mileage of a 1992 XLT. A random sample of 17 was taken from a normally distributed population and produced a mean of 52 miles per gallon and a standard deviation of 4.1 miles per gallon. Construct a 95 percent confidence interval for the mean gas mileage of any 1992 Harley Davidson XLT. Interpret the interval in part (a). The dealer claims that the average gas mileage of Harley Davidson 1992 XLT is 58 miles per gallon Based on the interval in part (a), can this claim be rejected? Justify your answer.
a. What is the 95% confidence interval (CI)?
CI = ______________ Enter (n1, n2)
Interpret the interval:
________________________________________________________
The claim ______________ be rejected.
Justify your answer

Correct Answer:

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a. What is the 95% confidence interval (...

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