\fStat Question A company that specializes in online and catalog sales of electronics has collected sales data to evaluate the effectiveness of their catalog business. The data can be found in the Excel file below. Short answer question.xlsx Please answer the following questions and upload your data file using the link below (displayed as Question 32). This will help with partial credit. (A) Estimate a multiple linear regression model involving the variables Close, Salary, Children, Previous customer, Previous Spent and Catalogs. Interpret the coefficients for Previous Customer and Catalog. (B) Interpret the of your regression. (C) Run a second multiple regression model, but this time include all explanatory variables from the data file. Which model would you choose? Explain your choice. (D) You suspect that the number of catalogs sent to a customer may have a different effect on previous customers than on new customers. Therefore, you decide to run a third regression, where you include an interaction term of these two variables in addition to the variables from part (A). Interpret the coefficient of the interaction term. (E) Extra Credit Question: Should you include the interaction term? Why or why not? (F) Please provide data in excel format