Blue Bell stock is expected to return 8.4 percent in a boom, 8.9 percent in a normal economy, and 9.2 percent in a recession.The probabilities of a boom, normal economy, and a recession are 6 percent, 92 percent, and 2 percent, respectively.What is the standard deviation of the returns on this stock?
A).38 percent
B).55 percent
C).13 percent
D).42 percent
E).06 percent

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The Answer of Blue Bell stock is expected to return 8.4 percent in a boom, 8.9 percent in a normal economy, and 9.2 percent in a recession.The probabilities of a boom, normal economy, and a recession are 6 percent, 92 percent, and 2 percent, respectively.What is the standard deviation of the returns on this stock?
A).38 percent
B).55 percent
C).13 percent
D).42 percent
E).06 percent

Blue Bell Stock Is Expected to Return 8