Question: The file Sedans contains the overall miles per gallon (MPG) of 2013 midsized sedans: a. Construct a 95% confidence interval estimate for the population mean

The file Sedans contains the overall miles per gallon

(MPG) of 2013 midsized sedans:

a. Construct a 95% confidence interval estimate for the population mean MPG of 2013 family sedans, assuming a normal distribution.

b. Interpret the interval constructed in (a).

c. Compare the results in

(a) to those in Problem 8.20(a).

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