Suppose that the S&P 500, with a beta of 1.0, has an expected return of 10% and T-bills provide a risk-free return of 4%. (LO12-1) a. How would you construct a portfolio from these two assets with an expected return of 8%? Specifically, what will be the weights in the S&P 500 versus T-bills? b. How would you construct a portfolio from these two assets with a beta of .4? c. Find the risk premiums of the portfolios in parts (a) and (b), and show that they are proportional to their betas.

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Question a Beta Exp Return SP 500 1 10 Treasury Bill 0 4 Let the proportion of capital invested in S... View the full answer