Stock X has a standard deviation of return of 10%. Stock Y has a standard deviation of 20%. The correlation coefficient between the stocks is 0.5. If you invest 60% of your funds in stock X and 40% in stock Y. What is the standard deviation of your portfolio? (please state the formula and show your workings) Wutstine 1 Qunvities 3 Black-Litiarmat modet. (15) Miarfa) Qunstisan 3 tant dow youe awolkinel) Qaestien 4 (15 nearta) Questien 5 (14.tularite) Questinn b X and 40 in in stoci: Y wodicit (10 mathi)