number 8

8. An investor invested $360 in a T-bill with a return of 2% and $840 in a stock with an expected return of 8% and a standard deviation of 7%. 8a. Calculate the expected return of this complete portfolio. 14 points) 8b. Calculate the risk of this complete portfolio. 12 points) 8c. If the risk of this complete portfolio increases from 0 to 6%, calculate the expected return of this complete portfolio. 14 points)