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

R_A = 1.5% + 0.55R_M + e_A

R_B = 1.4% + 0.60R_M + e_B

_M = 18%; R-square_A = 0.25; R-square_B = 0.16

Assume you create a portfolio Q, with investment proportions of 0.50 in a risky portfolio P, 0.30 in the market index, and 0.20 in T-bill. Portfolio P is composed of 60% Stock A and 40% Stock B.

a. What is the standard deviation of portfolio Q? (Calculate using numbers in decimal form, not percentages. Do not round intermediate calculations. Round your answer to 2 decimal places.)

b. What is the beta of portfolio Q? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

c. What is the "firm-specific" risk of portfolio Q? (Calculate using numbers in decimal form, not percentages. Do not round intermediate calculations. Round your answer to 4 decimal places.)

d. What is the covariance between the portfolio and the market index? (Calculate using numbers in decimal form, not percentages.Do not round intermediate calculations. Round your answer to 2 decimal places.)