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Suppose that the index model for stocks A and B is estimated from excess returns with the following results: R A = 1.60% + 0.70

Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 1.60% + 0.70RM + eA RB = -1.80% + 0.90RM + eB M = 22%; R-squareA = 0.20; R-squareB = 0.15 Assume you create portfolio P with investment proportions of 0.70 in A and 0.30 in B. a. What is the standard deviation of the portfolio? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) b. What is the beta of your portfolio? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) c. What is the firm-specific variance of your portfolio? (Do not round your intermediate calculations. Round your answer to 4 decimal places.)

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