it View Insert Format Tools Add-ons Help All changes saved in Drive - I 100% -Normal text verdana 2. EXCEL Below is nine months' return data for Walgreens and the S&P 500. a. Estimate the intercept (alpha) and beta for Walgreens stock using spreadsheet functions b. Interpret what the slope estimate means to a stock analyst. c. Compute the R-squared of the regression using Excel's RSQ function. What does the R-squared tell us about the relationship between Walgreens' returns and those of the market? Month Walgreens Return S&P500 Return 7 5010 1.8% -8.2% 6.4% 2 3 4 5 6 2.0% -5.9% 0.2% 2.0% -2.2% -14.3% -6.0% 4.9% -2.5% 0.5% 8 9 -6.4%