17. You recently purchased a stock that is expected to earn 19 percent in a booming economy, 8 percent in a normal economy, and lose 28 percent in a recessionary economy. There is a 20 percent probability of a boom and a 70 percent chance of a normal economy. What is standard deviation on this stock?

NOTES: show all calculation and clear hand Written Please

18. What is the standard deviation of the returns on a portfolio that is invested in stocks A, B, and C? 40 percent of the portfolio is invested in stock A and 35 percent is invested in stock C. State of Economy Probability of State of Economy Stock A Boom 15% 13% Normal 65% 6% Bust 20% -2% Returns if State Occurs Stock B Stock C 5% 17% 8% 11% 14% - 19%