Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 1.5% + 0.55RM + eA RB = 1.4% + 0.6RM + eB M = 18%; R-squareA = 0.25; R-squareB = 0.16 Assume you create portfolio P with investment proportions of 0.60 in A and 0.40 in B. 1. What is the standard deviation of the portfolio? (Do not round your intermediate calculations. Round your answer to 2 decimal places. Omit the "%" sign in your response.) 2. What is the beta of your portfolio? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) 3. What is the firm-specific variance of your portfolio? (Do not round your intermediate calculations. Round your answer to 4 decimal places.) 4. What is the covariance between the portfolio and the market index? (Do not round your intermediate calculations. Round your answer to 3 decimal places.)