The following are the monthly rates of return for Madison Cookies and for Sophie Electric during a six-month period. Month 1 2 3 4 5 6 Madison Cookies Sophie Electric -0.04 0.07 0.06 -0.02 -0.07 -0.10 0.12 0.15 -0.02 -0.06 0.05 0.02 Compute the following. a. Average monthly rate of return Ri for each stock. b. Standard deviation of returns for each stock. c. Covariance between the rates of return. d. The correlation coefficient between the rates of return What level of correlation did you expect? How did your expectation compare with the computed correlation? Would these two stocks offer a good chance for diversification? Why or why not?