The following are the monthly rates of return for Madison Cookies and for Sophie Electric during a six-mionth period. Compute the following. Do not round intermediate calculations. Round your answers to four decimal places. a. Average monthly rate of return R, for each stock. Madison Cookies: Sophie Electric: b. Standard deviation of returns for each stock. Madison Cookies: Sophie Electric: c. Covariance between the rates of return. d. The correlation coefficlent between the rates of retum. Would these two stocks be good cholces for diversification? Why or why not? Madison Cookes and Sophie Electric are correlation