23. What is the standard deviation of the returns on a stock given the following information! State of Economy Boom Normal Recession Probability of State of Economy 30% 65% Rate of Return if State Occurs 15% 12% 5% 24. You have a portfolio consisting solely of stock A and stock B. The portfolio has an expected retum of 9.8 percent. Stock A has an expected return of 11.4 percent while stock B is expected to retum 6.4 percent. What is the portfolio weight of stock A