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4. Portfolio Expected Return You have $10,000 to invest in a stock portfolio. Your choices are Stock X with an expected return of 13 percent and Stock Y with an expected return of 10.2 percent. If your goal is to create a portfolio with an expected return of 11.7 percent, how much money will you invest in Stock X? In Stock Y? 10. Calculating Portfolio Betas You own a stock portfolio invested 15 percent in Slock 0,20 percent in 1.05, and 1 45. respectively. What is the portfolio beta? 13. Using CAPM A stock has an expected return of 11.5 percent, the risk-free rate is 2.8 percent, and the market risk premium is 72 percent. What must the beta of this stock be