Consider the monthly simple excess returns, in percentages and including dividends, of 13 stocks and the S&P 500 composite index from January 1990 to December 2008. The monthly 3-month Treasury bill rate in the secondary market is used as the risk-free interest rate to compute the excess returns. The tick symbols for the stocks are AA, AXP, CAT, DE, F, FDX, HPQ, IBM, JNJ, KMB, MMM, PG, and WFC. The data are in the file \(\mathrm{m}\)-fac-ex-9008.txt. Perform the market model analysis of Section 9.2.1 for the 13 stock returns to obtain the estimates of \(\beta_{i}, \sigma_{i}^{2}\), and \(R^{2}\) for each stock return series.