The performance of the common stock of Apple Stores is highly dependent upon the state of the economy. In a boom economy, the stock is expected to return 25.0% in comparison to 8.4% in a normal economy and negative 16.0% in a recessionary period. The probability of a recession is 14%. There is a 24% chance of a boom economy. The remainder of the time the economy will be at normal levels. What is the standard deviation of the returns on Apple stock? Multiple Choice 13.31% 27.36% 10.38% 1221% Multiple Choice 8.15% 5.17% 7.84% 6.74% 9.72%