Do Heavier Cars Use More Gasoline? to Answer This Question,a

Multiple Choice

Do heavier cars use more gasoline? To answer this question,a researcher randomly selected 15 cars.He collected their weight (in hundreds of pounds) and the mileage (MPG) for each car.From a scatter plot made with the data,a linear model seemed appropriate.The following output was obtained from SPSS: What is the equation of the least-squares regression line?

A) ŷ = -0.52 x + 0.164
B) ŷ = 40.44 - 0.52x
C) ŷ = 40.44 + 6.28x
D) y = 40.44 + 0.52x