Question $18(5$ points$)$ Refer to the picture, which provides expected returns for $2$ assets$-"$A$"$ & $"$B$"$ for $3$ different states of nature: Boom, Normal, & Recession. The probability of each state is shown. What is the expected standard deviation in returns for Asset B$?\%[$Express your answer in percentage terms, rounded to $2$ decimal places $($ie $22\mathrm{.}00)]-$ keep $5$ decimal places for all intermediate calcualtions