8) Assume that you are a portfolio manager at Risky Bank and you manage a risky portfolio with an expected rate of return of 17% and a standard deviation of 27%. The T-bill rate is 7% (riskfree). One of your clients chooses to invest 70% of a portfolio in your fund and 30% in a T-bill money market fund. a) What is the expected return and standard deviation of your client's portfolio? b) Suppose your risky portfolio includes the following investments in the given proportions: What are the investment proportions of each stock in your client's overall portfolio, including the position in T-bills? c) What is the Sharpe ratio (S) of your risky portfolio and your client's overall portfolio? d) Suppose the same client in the previous problem decides to invest in your risky portfolio a proportion (y) of his total investment budget so that his overall portfolio will have an expected rate of return of 15%. What is the proportion y