$($Expected rate of return and risk$)$ Carter Inc. is evaluating a security. Given the information in the popup window, $,$ calculate the investment's expected return and its standard deviation.

a$.$ The investment's expected rate of retum is

$\%.($Round to two decimal places$)$

Data table

$($Click on the following icon

in order to copy its contents into a spreadsheet.$)$

$\backslash$table$[[\frac{?}{\text{b}\text{a}\text{r}}($ PROBABILITY $),$RETURN$],[0\mathrm{.}15,5\%$