An engineer wants to determine how the weight of a car, x, affects gas mileage,
ID: 3086409 • Letter: A
Question
An engineer wants to determine how the weight of a car, x, affects gas mileage, y. The following data represent the weight of various cars and their miles per gallon. Car A B C D E Weight (pounds), x 2740 2985 3400 3770 4010 Miles per Gallon, y 28.8 23.7 25 19 20 The slope indicates the average miles per gallon. The slope indicates the average change in miles per gallon for an increase of 1 pound in weight. The slope indicates the ratio between the average weight and the average miles per gallon. It is not appropriate to interpret the slope because it is not equal to zero. Choose the best interpretation for the y-intercept. The y-intercept indicates the average miles per gallon for the population. The y-intercept indicates the miles per gallon for a new car. The y-intercept indicates the average weight for the population. The y-intercept indicates the miles per gallon of the lightest car in the population. It is not appropriate to interpret the y-intercept because it is outside the scope of the model. Predict the miles per gallon of car B and compute the residual. Is the miles per gallon of this car above average or below average for cars of this weight? The predicted value is miles per gallon. (Round to two decimal places as needed.)Explanation / Answer
C D