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if you invested a 20% in a stock with expected return of 14% and expected standard deviation of 21% and the rest of your money would be with a stock
if you invested a 20% in a stock with expected return of 14% and expected standard deviation of 21% and the rest of your money would be with a stock of 12% expected return and 8% of expected standard deviation and they have a correlation coefficient of 0. what would be your expected standard deviation of your protfolio?