(Expected rate of return and risk) Carter Inc. is evaluating a security. Calculate the investment's expected return and its standard deviation.

Probability Return

0.15 6%

0.40 9%

0.30 12 %

0.15 15%

a. The investments expected rate of return is? _____% (round to two decimal places)

b The investments standard deviation is ? ______% (round to two decimal places)