Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 4.0% + 0.50RM + eA RB = -1.2% + 0.70RM + eB OM = 17%; R-squarea = 0.26; R-squareB = 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 Pis composed of 70% Stock A and 30% Stock B.

Essentials Of Investments
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Chapter1: Investments: Background And Issues
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Suppose that the index model for stocks A and B is estimated from excess returns with the following results:
RA
= 4.0% + 0.50RM + eA
RB = -1.2% + 0.70RM + eB
= 17%; R-squarea = 0.26; R-squareB
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 Pis composed of 70% Stock A and 30% Stock B.
Transcribed Image Text:Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 4.0% + 0.50RM + eA RB = -1.2% + 0.70RM + eB = 17%; R-squarea = 0.26; R-squareB 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 Pis composed of 70% Stock A and 30% 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.)
Standard deviation
b. What is the beta of portfolio Q? (Do not round intermediate calculations. Round your answer to 2 decimal places.)
Portfolio beta
Transcribed Image Text: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.) Standard deviation b. What is the beta of portfolio Q? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Portfolio beta
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