expected rate of return and risk

please show how to get calculations, as this is a multi part question

(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? a. The investment's expected retum is \%. (Round to two decimal places.)