8.20 The file SUV contains the overall miles per gallon (MPG) of 2012 small SUVs: 20 22 23 22 23 22 22 21 19 22 22 26 23 24 19 21 22 16 Source: Data extracted from "Ratings," Consumer Reports, April 2012, pp. 35-36. ebnuog ynam a. Construct a 95% confidence interval estimate for the population mean MPG of 2012 small SUVs, assuming a normal distribution. b. Interpret the interval constructed in (a). c. Compare the results in (a) to those in Problem 8.19(a)