The Car Weight and Mileage data file on the text CD shows the weight (in pounds) and mileage (miles per gallon) of 25 different model autos.
a. Identify the natural response variable and explanatory variable.
b. The regression of mileage on weight has MINITAB regression output

State the prediction equation and report the y -intercept and slope.
c. Interpret the slope in terms of a 1000-pound increase in the vehicle weight.
d. Does the y -intercept have any contextual meaning for these data?

Transcribed Image Text:

SE Coef T PredictorCoef Constant weight .0052220 0.0006271 8.33 0.000 45.645 2.603 17.54 0.000