Problem 8-13

Suppose that the index model for stocks A and B is estimated from excess returns with the following results:

R_A = 2.6% + 0.90R_M + e_A

R_B = 2% + 1.2R_M + e_B

_M = 26%; R-square_A = 0.21; R-square_B = 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

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