Assume that you manage a risky portfolio with an expected rate of return at 17% and a standard deviation of 27%. The T-bill rate is 7%. 1 ef 1 Words 26 14. Suppose the same client as in the previous problem prefers to imvest in your porttolio a proportion () that maximizes the expected return on the overall portfolio subject to the constraint that the overall portfolio's standard deviation will not exceed 20%. (LO 5-3) se a. What is the investment proportion.y You ha b. What is the expected rate of return on the overall portfolio