7.14. Demand for car motor fuel. An economist wants to model annual per capita demand, y, for passenger car motor fuel in the United States as a function of the two quantitative independent variables, average real weekly earnings (x1) and average price of regular gasoline (x2). Data on these three variables for the years 1985-2017 are available in the ProQuest 2018 Statistical Abstract of the United States. Suppose the economist fits the model ( ) = 0 + 1 1 + 2 2 to the data. Would you recommend that the economist use the least squares prediction equation to predict per capita consumption of motor fuel in 2020? Explain. MAT-300