You decide to invest in a portfollo consisting of 15 percent Stock X,36 percent Stock Y, and the remainder in Stock Z. Based on the following information, what is the standard deviation of your portfolio? Multiple Choice 6.83% 2.20% 5.86% 4.69% 165% You decide to invest in a portfollo consisting of 15 percent Stock X,36 percent Stock Y, and the remainder in Stock Z. Based on the following information, what is the standard deviation of your portfolio? Multiple Choice 6.83% 2.20% 5.86% 4.69% 165%