Question

Question 22 3 pts A regression analysis was done on 81 different SUV vehicles. The variables analyzed Included are the average gas mileage in miles per gallon (Average MPG) and the engine size in liters (Engine Size). The average miles per gallon is a weighted average of city and highway driving to reflect a 40/60 percent split. The estimated regression equation is: Average MPG = 27.654 - 2.114*Engine Size R-squared = .4615 Based on the regression model, the estimated value of Avg. MPG when Engine Size is 3.0 liters is: 27.654 + (-2.114*3.0) 3.0-2.114 27.654 + (-2.1142) 27.654*3 +(-2.114)

Answer 1

1) estimated value =27.654+(-2.114*3)

2)

Negative. As Engine Size increases the Average MPG decreases.