6. There is a risky portfolio of multiple stocks with an expected return of 15% and a standard deviation of 24%. James invests 70% of his total wealth in this risky portfolio and the rest on Treasury bills. One-year T-bill rate is 3%. a. Calculate the expected return and standard deviation of his portfolio. b. Calculate his risk premium of the risky portfolio as well as of the complete portfolio. c. Compute the degree of risk aversion and the Sharpe ratio. d. Draw the capital allocation line (CAL)