Show transcribed image text Consider historical data showing that the average annual rate of return on the S&P 500 portfolio over the past 85 years has averaged roughly 8% more than the Treasury bill return and that the S&P 500 standard deviation has been about 29% per year.
Assume these values are representative of investors' expectations for future performance and that the current T-bill rate is 4%.
Calculate the expected return and variance of portfolios invested in T-bills and the S&P 500 index with weights as follows:
(Leave no cells blank - be certain to enter "0" wherever required. Round "Expected Return" to 1 decimal place and the "Variance" to 4 decimal places. Omit the "%" sign in your response.)
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WBills
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Windex
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Expected Return
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Variance |
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0.2
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0.8
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0.0
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1.0
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0.6
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0.4
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|
|
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0.8
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0.2
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|
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0.4
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0.6
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|
|
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1.0
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0.0
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