7. The following are monthly percentage price chres for four market indexes: Month DJIA S&P 500 Russell 2000 NIKKEI 1 2 3 mmmm 888888 01 .10 -04 03 11 os -.02 07 02 -06 06 Compute the following: a. Expected monthly rate of return for each series Standard deviation for each series. c. Covariance between the rates of return for the following indexes DJIAS&P 500 S&P 500 Russell 2000 S&P 500-NIKKEI Russell 2000-NIKKEI d. The correlation coefficients for the same four combinations c. Using the answers from Parts a, b, and d. calculate the expected return and standard deviation of a portfolio consisting of equal parts of (1) the S&P and the Russell 2X10 and () the S&P and the NIKKEI Discuss the two portfolios