Suppose that there are many stocks in the security market and that the characteristics of stocks A and B are given as follows: Stock A B Expected Return Standard Deviation 12% 19 Correlation = -1 3% 9 Suppose that it is possible to borrow at the risk-free rate, r. What must be the value of the risk-free rate? (Hint: Think about constructing a risk-free portfolio from stocks A and B. Since they have a perfect negative correlation, the rate of return will be the r Note: Do not round intermediate calculations. Round your answer to 3 decimal places. Risk-free rate %

Assume that security returns are generated by the single-index model,   Ri = αi + βiRM + ei where Ri is the excess return for security i and RM is the market’s excess return. The risk-free rate is 3%. Suppose also that there are three securities A, B, and C, characterized by the following data:   Security βi E(Ri) σ(ei) A 1.4 14 % 23 % B 1.6 16   14   C 1.8 18   17       a. If σM = 22%, calculate the variance of returns of securities A, B, and C.   b. Now assume that there are an infinite number of assets with return characteristics identical to those of A, B, and C, respectively. What will be the mean and variance of excess returns for securities A, B, and C? (Enter the variance answers as a percent squared and mean as a percentage. Do not round intermediate calculations. Round your answers to the nearest whole number.)

Suppose that there are many stocks in the security market and that the characteristics of stocks A and B are given as follows: Stock A B Expected Return 10% Standard Deviation 5% 9 18 Correlation = -1 Risk-free rate Suppose that it is possible to borrow at the risk-free rate, rf. What must be the value of the risk-free rate? (Hint: Think about constructing a risk-free portfolio from stocks A and B.) Note: Do not round intermediate calculations. Round your answer to 3 decimal places. %

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Suppose that there are many stocks in the security market and that the characteristics of stocks A and B are given as follows:  Stock Expected Return  Standard Deviation A     12 %     4 % B     19       12     Correlation = –1          Suppose that it is possible to borrow at the risk-free rate, rf. What must be the value of the risk-free rate? (Hint: Think about constructing a risk-free portfolio from stocks A and B.)

Suppose that there are many stocks in the security market and that the characteristics of stocks A and B are given as follows: Stock A B Expected Return 11% 17 Correlation -1 Risk-free rate Standard Deviation 6% 9 Suppose that it is possible to borrow at the risk-free rate, r. What must be the value of the risk-free rate? (Hint: Think about constructing a risk-free portfolio from stocks A and B.) (Do not round intermediate calculations. Round your answer to 3 decimal places.) %

Is it possible to construct a portfolio of real-world stocks that has a required return equalto the risk-free rate? Explain.

Suppose that there are many stocks in the security market and that the characteristics of stocks A and B are given as follows: Expected Return 11% 17 Correlation = -1 Stock A B Standard Deviation 6% 9 Suppose that it is possible to borrow at the risk-free rate, rf. What must be the value of the risk-free rate? (Hint: Think about constructing a risk-free portfolio from stocks A and B.) Note: Do not round intermediate calculations. Round your answer to 3 decimal places. Risk-free rate

Assume that security returns are generated by the single-index model, Ri a BiRM + ei where R₁ is the excess return for security /and Ry is the market's excess return. The risk-free rate is 3%. Suppose also that there are three securities A, B, and C, characterized by the following data: Security Bi E(Ri} #{@į) A 1.5 61 298 B 1.7 8 15 C 1.9 10 24 a. If oy 26%, calculate the variance of returns of securities A, B, and C. Answer is complete but not entirely correct. Variance Security A 1,521 Security B 1,609 Security C 2,440 b. Now assume that there are an infinite number of assets with return characteristics identical to those of A, B, and C, respectively. What will be the mean and variance of excess returns for securities A, B, and C? (Enter the variance answers as a percent squared and mean as a percentage. Do not round intermediate calculations. Round your answers to the nearest whole number.)

Assume that security returns are generated by the single-index model,  Ri = alphai + BetaiRM + ei where Ri is the excess return for security i and RM is the market's excess return. The risk-free rate is 2%. Suppose also that there are three securities A, B, and C, characterized by the following data.  Security Betai E(Ri) sigma(ei) A 1.4 15% 28% B 1.6 17% 14% C 1.8 19% 23% a. If simaM = 24%, calculate the variance of returns of securities A, B, and C (round to whole number).    Variance Security A   Security B   Security C   b. Now assume that there are an infinite number of assets with return characteristics identical to those of A, B, and C, respectively. What will be the mean and variance of excess returns for securities A, B, and C (enter the variance answers as a whole number decimal and the mean as a whole number percentage)?   Mean Variance Security A ?%   Security B ?%   Security C ?%