The performance of the common stock of Apple Stores is highly dependent upon the state of the economy. In a boom econorny, the stock is expected to retum \25.0 in comparison to \11.0 in a normal economy and negative \15.0 in a recessionary period. The probability of a recession is \16. There is a \26 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 \655 3155