Given the following information, calculate the expected return and standard deviation for a portfolio that has 39 percent invested in Stock A, 31 percent in Stock B, and the balance in Stock C. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.) Returns State of Economy Boom Bust Probability of State of Economy .50 .50 Stock A 14% 17 Stock B 21% 0 Stock C 24% -17 Expected return % Standard deviation %