Assume that an investment is forecasted to produce the following returns: a 30% probability of a 12% return; a 40% probability of a 16% return; and a 30% probability of a 19% return. What is the standard deviation of return for this investment? O 5.89% 0 2.72% 0 2.43% O 15.7% The rate on T-bills is currently 2%. Environment Help Company stock has a beta of 1.5 and a required rate of return of 17%. According to CAPM, determine the return on the market portfolio. 0 27.5% O 19.0% O 14.0% O 12.0% Wildings, Inc. common stock has a beta of 1.5. If the risk-free return is 4% and the market risk premium is 8.5%, what is the required return on Wildings' stock? O 16.75% 15.04% O 13.8% O 14.8%