The data below represents the overall miles per gallon (MPG) of 2008 SUVs priced under $30,000. Complete parts a and b below. 23, 21, 19, 22, 19, 17, 15, 16, 20, 18, 18, 18, 22, 18, 19, 19, 16, 18, 16, 19, 17, 21 a. Construct a 95% confidence interval estimate for the population mean miles per gallon of 2008 SUVs priced under $30,000, assuming normal distribution. SUS (Round to two decimal places as needed.) b. Interpret the interval constructed in (a). Choose the correct answer below. O A. With 95% confidence, the mean miles per gallon in the population of 2008 SUVs is somewhere in the interval. O B. With 95% confidence, the mean miles per gallon in the sample of 2008 SUVs is somewhere in the interval. O C. With 95% confidence, the mean miles per gallon in the population of 2008 SUVs is the sample mean. O D. With 95% confidence, the mean miles per gallon in the sample of 2008 SUVs is the population mean