A stock is expected to return 35% In a boom, 15% In a normal economy, and lose 65% in a recession. The probabilities of a boom, normal economy, and a recession are 5%, 90%, and 5%, respectively. What is the standard deviation of the returns on this stock? Probability 0.05 0.9 0.05 Return 35 15.00 -65 1.75 13.5 3.25 Sid of the retur