(Related to Checkpoint 7.1) (Expected rate of return and risk) B. J. Gautney Enterprises is evaluating a security. One-year Treasury bills are currently paying 5.7 percent, Calculate the investment's expected return and its standard deviation. Should Gautney invest in this security? Probability 0.05 0.35 0.55 0.05 Return -5% 4% 6% 10% (Click on the icon in order to copy its contents into a spreadsheet.) a. The investment's expected return is %. (Round to two decimal places.)