0.004000The covariance of returns on stocks X and Y is 0.002800. Consider a portfolio of 90% stock X and 10% stock Y.What is the standard deviation of portfolio returns?Please specify your answer in decimal terms and round your answer to the nearest thousandth (e.g., enter 12.3 percent as 0.123).Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel
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