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You decide to invest in a portfolio consisting of 19 percent Stock X, 49 percent Stock Y, and the remainder in Stock Z. Based on the following information, what is the standard deviation of your portfolio? State of Economy Probability of State of Economy . Return if State Occurs
Stock X Stock Y Stock Z
Normal 80 10.30% 3.70% 12.70%
Boom 20 17.60% 25.60% 17.10%
O 5.41% O 2.20% O 7.89% O 6.76% O 2.93%