Suppose that the Index model for stocks A and B is estimated from excess returns with the following results: RA=4.0%+0.50RM+eARB=1.2%+0.70RM+eBM=17%;R-squareA=0.26;--qqareB=0.18 Assume you create a portfolio Q, with Investment proportions of 0.40 In a risky portfolio P,0.35 In the market Index, and 0.25 In T-bill. Portfolio P is composed of 70% Stock A and 30% Stock B. a. What is the standard deviation of portfolio Q ? (Calculate using numbers in declmal form, not percentages. Do not round Intermedlate calculations. Round your answer to 2 decimal places.) b. What is the beta of portfolio Q ? (Do not round Intermedlate calculatlons. 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 Intermedlate calculations. Round your answer to 4 decimal places.) d. What is the covarlance between the portfolio and the market Index? (Calculate using numbers In decimal form, not percentages. Do not round Intermedlate calculatlons. Round your answer to 2 decimal places.)