Question: Repeat Exercise 21 using a 99% confidence interval. Exercise 21 In a random sample of 28 sports cars, the average annual fuel cost was $2929

Repeat Exercise 21 using a 99% confidence interval.

Exercise 21

In a random sample of 28 sports cars, the average annual fuel cost was $2929 and the standard deviation was $786. Construct a 90% confidence interval for μ. Interpret the results. Assume the annual fuel costs are normally distributed.

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