A market analyst is interested in estimating the relationship between the miles per gallon of fuel for motorcycles (Mileage, measured in mpg) and the age of that vehicle (Age, measured in years). She...

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Extracted text: A market analyst is interested in estimating the relationship between the miles per gallon of fuel for motorcycles (Mileage, measured in mpg) and the age of that vehicle (Age, measured in years). She collects information on 200 motorcycles across the automobile industry and estimates the following regression equation: Mileage = 50.47– 2.86Age - 0.01Age", R = 0.541. (2.34) (2.45) (1.29) The standard errors are given in parentheses. She wants to find the effect on mileage of a change in age (AAge) of motorcycles. If the age of a motorcycle increases from 1 to 2 years, the predicted change in Mileage will be mpg. (Round your answer to two decimal places. Enter a minus sign if your answer is negative.)