[This problem requires either the material in Appendix A13.1 or a computer program to carry out the multiple regression computations.] In Chapter 12, using the data of Table 12.5, we estimated the regression model Y, Retail sales per household Disposable income per household Use these same data to estimate the regression model Ya+Bx + y + & and test the null hypothesis that y = 0.

11. (This problem requires a computer program to carry out the multiple regression computa tions.] The table shows twenty-eight quarterly observations from the United Kingdom' on the quantity of money in million pounds (y), income in million pounds (x1), and the local authority interest rate (x). Estimate the model Ya+Bux+ Box + y + and write a report on your findings.