Consider the probability distribution of alternative rates of return associated with stock A and B given in the following table: State of economy a. b. 1 2 3 Probability 0.3 0.4 0.3 Stock A 5% 10 15 Stock B 25% 15 5 Calculate the expected return and standard deviation of stock A and B. If you form a portfolio of stock A and B comprising 70 percent wealth in stock A and the rest in stock B, Calculate the risk and return your portfolio. Does the portfolio help to diversify the risk [6+4