Sample Data for Supermarket Profits Supermarket Food Sales (tens Nonfood Sales Store Size Profit (thousands Number of thousands of (tens of thousands (thousands of of dollars) dollars) of dollars) square feet) Y X ? X? X ? 20 15 17 16 27 35 1 2 3 4 5 6 7 8 9 22 23 l' D You have to indicate the purpose of the study and discuss (not listing) data characteristics before answering questions and interpreting the results of the regression analysis. 1. Run a single regression using the above data. (with profit as the dependent variable and Food Sales as independent variable). P???i? = '20 + '21:: F??? S?l?? 2. Run a single regression using the above data. (with profit as the dependent variable and Nonfood Sales as independent variable). P???i? = '30 + '21 * N?????? 5'?l?? 3. Run a single regression using the above data. (with profit as the dependent variable and Store Size as independent variable). P???i? = ?0 + ?1* 3???? Siz