Estimate the beta for Apple using monthly excess returns on Apple and the S&P500 for the last 5 calendar years (end on the last trading day of the most recent December). Notes: 1) I pulled my data from Yahoo Finance: https://finance.yahoo.com/ 2) Use the adjusted close to calculate returns so that dont have to include dividends when calculating returns. 3) The 10-year Treasury returns are given as annual percentage rates. Use these to calculate effective monthly rates assuming that the