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A pension fund manager is considering three mutual funds. The first is a stock fund, the...

A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a rate of 8%. The probability distribution of the risky funds is as follows: Expected Return Standard Deviation Stock fund (S) 21 % 36 % Bond fund (B) 13 22 The correlation between the fund returns is 0.13. a-1. What are the investment proportions in the minimum-variance portfolio of the two risky funds. (Do not round intermediate calculations. Enter your answers as decimals rounded to 4 places.) a-2. What is the expected value and standard deviation of its rate of return? (Do not round intermediate calculations. Enter your answers as decimals rounded to 4 places.)

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Answer #1

The expected return is simply summed as: Weights of stock*Return of stock + Weights of Bond*Return in Bonds

The standard deviation can be calculated by matrix multiplication:

Exp ret Std dev Cor(1,2) 0.13 Stock Bond Riskfree 0.21 0.13 0.08 0.36 0.22 Covariance matrix 0.1296 0.0103 0.0103 0.0484 Minimum variance portfolio Stock Bond Exp ret Std dev 0.2421 0.7579 0.1494 0.1979

Exp ret Std dev Cor(12) 0.36 0.22 6 Stock 7 Bond 8 Riskfree 9 10 Covariance matrix 11 -C6 2 12D6 C6 C7 13 14 Minimum variance portfolio 15 Stock 16 Bond 17 Exp ret 18 Std dev 19 26 27 28 1 29 1 30 31 0.21 0.13 0.08 0.13 A12 MMULT(MINVERSE(A11:B12),A28:A29ySUM (MINVERSE(A11:812) MMULT (MINVERSE(A11:B12).A28:A29ySUM MINVERSE(A11:B12) -B15 B6+B7*B16 -SQRT 1/SUM(MINVERSE (A11:B12)))

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