Read the box "The Beta of a Stock" in Section 4.2 of Stock and Watson: Introduction to Econometrics, updated Third Edition. Suppose that the value of ̢ is greater than 1 for a particular stock. Show that the variance of (R-Rf) for this stock is greater than the variance of (Rm-Rf). Suppose that the value of ̢ is less than 1 for a particular stock. Is it possible that the variance of (R-Rf) for this stock is greater than the variance of (Rm-Rf)? (Hint: Don't forget the regression error). In a given year, the rate of return on 3-month Treasury bills is 2.0% and the rate of return on a large diversified portfolio of stocks (the S&P500) is 5.3%. For each company listed in the table in the box, use the estimated value of ̢ to estimate the stock's expected rate of return.