B$.$ J$.$ Gautney Enterprises is evaluating a security. $$ One$-$year Treasury bills are currently paying $4\mathrm{.}3$ percent. Calculate the$$ investment's expected return and its standard deviation. Should Gautney invest in this$$ security?

Probability

Return

$0\mathrm{.}10$

negative $5$

$\%$

$0\mathrm{.}35$

$1$

$\%$

$0\mathrm{.}45$

$6$

$\%$

$0\mathrm{.}10$

$10$

$\%$

$($Click on the icon in order to copy its contents into a spreadsheet.$)$

Question content area bottom

Part $1$

a$.$The$$ investment's expected return is

$$

$3\mathrm{.}55\%.($Round to two decimal$$ places.$)$

Part $2$

b$.$ The$$ investment's standard deviation is

$$

enter your response here$\%.($Round to two decimal$$ places.$)$