Motor Vehicle Fuel Efficiency. Open the data set FuelEfficiency. We will explore some characteristics of this data set, using the tools and techniques we have learned in this section. Use technology to do Exercises 80–84.
fuelefficiency
84. Use the population mean and standard deviation from Exercises 81 and 82 to determine whether the observed number of compact cars in your sample in Exercise 83 is unusual, using the -score method.