The following are estimates for two stocks. Stock Expected Return 10% 18 Beta 0.70 1.25 Firm-Specific Standard Deviation 28% 42 B The market index has a standard deviation of 22% and the risk-free rate is 7%. a. What are the standard deviations of stocks A and B? (Do not round intermediate calculations. Round your answers to 2 decimal places.) % Stock A Stock B % b. Suppose that we were to construct a portfolio with proportions: Stock A Stock B T-bills 0.35 0.35 0.30 Compute the expected return, standard deviation, beta, and nonsystematic standard deviation of the portfolio. (Do not round intermediate calculations. Enter your answer for Beta as a number, not a percent. Round your answers to 2 decimal places.) % Expected return Standard deviation Beta Nonsystematic standard deviation %