Assume that you manage a risky portfolio with an expected rate of retum of 20% and a standard deviotion of 44%. The T-bill rate is 4% A client prefers to invest in your portfolio o proportion (y) that maximizes the expected return on the overall portfolio subject to the constraint that the overall portfolio's standard deviation will not exceed 35% Required: a. What is the investment proportion, y? (Do not round intermediate calculations. Round your answer to 2 decimal places.) b. What is the expected rate of return on the overall portfolio? (Do not round intermediate calculations, Round your answer to 2 decimal places.)