1. The file Delldata.xlsx (available on the companion website) contains monthly returns for the Standard \& Poor's stock index and for Dell stock. The beta of a stock is defined as the slope of the least-squares line used to predict the monthly return for a stock from the monthly return for the market. Use this file to perform the following exercises: a. Estimate the beta of Dell. b. Interpret the meaning of Dell's beta. c. If you believe a recession is coming, would you rather invest in a highbeta or low-beta stock? d. During a month in which the market goes up 5 percent, you are 95 percent sure that Dell's stock price will increase between which range of values