The accompanying table shows a portion of data consisting of the selling price, the age, and the

Question:

The accompanying table shows a portion of data consisting of the selling price, the age, and the mileage for 20 used sedans. The entire data set, labeled Car_Prices, can be found on the text website.

a. Determine the sample regression equation that enables us to predict the price of a sedan on the basis of its age and mileage.
b. Interpret the slope coefficient of Age.
c. Predict the selling price of a five-year-old sedan with 65,000miles.