Consider the following information: Rate of Return if State Occurs Probability of State of Economy Stock A Stock B State of Economy Recession Normal Boom .02 .15 .50 -30 .18 .35 .10 .15 .31 a. Calculate the expected return for the two stocks. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. Calculate the standard deviation for the two stocks. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Stock A expected return Stock B expected return Stock A standard deviation Stock B standard deviation b