【单选题】Suppose you invest in 100 shares of Harley-Davidson (HOG) at $40 per share and 230 shares of Yahoo (YHOO) at $25 per share. If the price of Harley-Davidson increases to $50 and the price of Yahoo decr...
【单选题】Suppose you invest in 100 shares of Merck (MRK) at $40 per share and 100 shares of Yahoo (YHOO) at $25 per share. If the price of Merck increases to $50 and the price of Yahoo decreases to $20 per sha...
【简答题】Suppose the same as in the previous problem prefers to invest in your portfolio a proportion (y) that maximizes the expected return on the overall portfolio subject to the constraint that the o...