Consider the following information: Rate of Return if State Occurs State of Economy Recession Normal Boom Probability of State of Economy 0.10 0.50 0.40 Stock A 003 0.07 0.15 Stock B -0.17 0.12 0.35 Required: Given that the expected return for Stock A is 9.800%, calculate the standard deviation for Stock A. (Do not round your intermediate calculations.) 4.18%