Question: A consumer organization wants to develop a regression model to predict gasoline mileage (as measured by miles per gallon) based on the horsepower of the car's engine and the weight of the car in pounds. A sample of 15 recent car models was selected and the results are given below.

a. State the multiple regression equation.

b. Interpret the meaning of the slopes b₁ and b₂ in this problem.

c. Explain why the regression coefficient b₀ has no practical meaning in the context of this problem.

d. Predict the mean miles per gallon for cars that have 100 horsepower and weigh 3,000 pounds.