Chris Smith is a sports car enthusiast with a particular love for Mini Coopers. He downloaded data from eBay on completed auctions of Mini Coopers and used it to create the data set in the file MiniCooper. xlsx showing the selling prices, age, mileage, and location of Mini Cooper automobiles. He would like to use this data to build a regression model to predict the estimated selling price of Mini Coopers. a. Prepare scatter plots showing the relationship between selling price and each of the independent variables. What sort of relationship does each plot suggest? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank b. Using only the variables in this data set, what regression model has the highest R2 value? I. Age II. Mileage III. West IV. South V. Northeast VI. Mid-Atlantic JII. Southwest All of the above. What is the model and what is its R2 value? Round your answer to one decimal place.