SCENARIO 13-14
An automotive engineer would like to be able to predict automobile mileages.She believes that the two most important characteristics that affect mileage are horsepower and the number of cylinders (4 or 6) of a car.She believes that the appropriate model is
Y = 40 - 0.05X1 + 20X2 - 0.1X1X2
where X1 = horsepower
X2 = 1 if 4 cylinders, 0 if 6 cylinders
Y = mileage.
-Referring to SCENARIO 13-14, the fitted model for predicting mileages for 4-cylinder cars is_.
A)40 - 0.05X1
B)40 - 0.10X1
C)60 - 0.10X1
D)60 - 0.15X1

Question

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The Answer of SCENARIO 13-14
An automotive engineer would like to be able to predict automobile mileages.She believes that the two most important characteristics that affect mileage are horsepower and the number of cylinders (4 or 6) of a car.She believes that the appropriate model is
Y = 40 - 0.05X1 + 20X2 - 0.1X1X2
where X1 = horsepower
X2 = 1 if 4 cylinders, 0 if 6 cylinders
Y = mileage.
-Referring to SCENARIO 13-14, the fitted model for predicting mileages for 4-cylinder cars is_.
A)40 - 0.05X1
B)40 - 0.10X1
C)60 - 0.10X1
D)60 - 0.15X1

SCENARIO 13-14 An Automotive Engineer Would Like to Be Able to Predict