4) Consider the following information about three stocks: State of Economy Boom Normal Bust Probability of State of Economy .25 .60 .15 Rate of Return if State Occurs Stock A .21 .33 .17 .11 .00 -21 55 .09 - 45 a. If your portfolio is invested 40 percent each in A and B and 20 percent in C, what is the portfolio expected return? The variance? The standard deviation? b. If the expected T-bill rate is 3.8 percent, what is the expected risk premium on the portfolio? C. If the expected inflation is 3.30 percent, what are the approximate and exact expected real returns on the portfolio? What are the approximate and exact expected real risk premiums on the portfolio? 5) You own a stock portfolio invested 20 percent in Stock Q. 30 percent in Stock R, 35 percent in Stock S, and 15 percent in Stock T. The betas for these stocks are .79, 1.23, 1.13, and 1.36, respectively. What is the portfolio beta? 4) Consider the following information about three stocks: State of Economy Boom Normal Bust Probability of State of Economy .25 .60 .15 Rate of Return if State Occurs Stock A .21 .33 .17 .11 .00 -21 55 .09 - 45 a. If your portfolio is invested 40 percent each in A and B and 20 percent in C, what is the portfolio expected return? The variance? The standard deviation? b. If the expected T-bill rate is 3.8 percent, what is the expected risk premium on the portfolio? C. If the expected inflation is 3.30 percent, what are the approximate and exact expected real returns on the portfolio? What are the approximate and exact expected real risk premiums on the portfolio? 5) You own a stock portfolio invested 20 percent in Stock Q. 30 percent in Stock R, 35 percent in Stock S, and 15 percent in Stock T. The betas for these stocks are .79, 1.23, 1.13, and 1.36, respectively. What is the portfolio beta