The expected rate of return for the stock of Cornhusker Enterprises is 20 percent, with a standard deviation of 15 percent. The expected rate of return for the stock of Mustang Associates is 10 percent, with a standard deviation of 9 percent. a. Which stock would you consider to be riskier? Why? b. If you knew that the beta coefficient of Cornhusker stock is 1.5 and the beta of Mustang is 0.9, how would your answer to Part a change?