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Five years ago you created a portfolio. You put 65% of your money in Stock A and 35% of your money in Stock B. The
Five years ago you created a portfolio. You put 65% of your money in Stock A and 35% of your money in Stock B. The returns for Stock A over the past five years were: 20%, 18%, -15%, 15% and 23%. The returns on Stock B for the past five years were: -5%, 25%, 30%, 20% and -10%. What was the population standard deviation of the portfolio's returns?
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