Your roommate Kim would like to buy a used Toyota Prius for an extended road trip this summer. Since you are taking statistics, Kim has asked you to help with figuring out a fair price to pay for the used car. Along with looking up the "blue book value," you decide to investigate local Prius prices using regression analysis. From Craig's list, you gather a data set of 20 cars currently for sale, containing their year made, mileage, and price (offered price). Based on your analysis of the data, you hope to help Kim buy a car for a reasonable price