Suppose that the index model for stocks A and B is estimated from excess returns with the following results: Ra = 2.6% + 0.90RM + eA Ag--2% + 1.2RM + eB -2696; R-squareA-0.21; R-squareg = 0.12 Assume you create portfolio P with investment proportions of 0.70 in A and 0.30 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.) Standard deviation 2. What is the beta of your portfolio? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Portfolio beta .99 3. What is the firm-specific variance of your portfolio? (Do not round your intermediate calculations Round your answer to 4 decimal places.) Firm-specific 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.) Covariance