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How s your mileage Weight in tons and fuel economy in

How's your mileage? Weight (in tons) and fuel economy (in mpg) were measured for a sample of seven diesel trucks. The results are presented in the following table.

a. Compute the least-squares regression line for predicting mileage from weight.

b. Construct a residual plot. Verify that a linear model is appropriate.

c. If two trucks differ in weight by 5 tons, by how much would you predict their mileages to differ?

d. Predict the mileage for trucks with a weight of 15 tons.

a. Compute the least-squares regression line for predicting mileage from weight.

b. Construct a residual plot. Verify that a linear model is appropriate.

c. If two trucks differ in weight by 5 tons, by how much would you predict their mileages to differ?

d. Predict the mileage for trucks with a weight of 15 tons.

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