3. You own a stock portfolio equally invested in a risk-free asset and two stocks. If one of the stocks has a beta of 1.75 and the total portfolio is equally as risky as the markft, what must the beta be for the other stock in your portfolio? 4. A stock has an expected return of 13 percent, the risk-free rate is 3.5 percent, and the market risk premium is 7 percent. What must the beta of this stock be