Question: Auto engineer computed a least squares regression line for predicting the gas mileage (y) in miles per gallon of a certain vehicle from its speed

Auto engineer computed a least squares regression line for predicting the gas mileage (y) in miles per gallon of a certain vehicle from its speed (x) in miles per hour. The result is y= -0.15 + 34.86. Predict the gas mileage when the vehicle is traveling at 79 miles per hour.

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