B7-6 (book/static) Question Help (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 2.9 percent. Calculate the investment's expected return and its standard deviation. Should Gautney invest in this security? Probability Return 0.15 -3% 0.30 2% 0.40 4% 0.15 6% (Click on the icon in order to copy its contents into a spreadsheet.) a. The investment's expected return is %. (Round two decimal places.)