Problem $13-7$ Calculating Returns and Standard Deviations $[$LO$1]$

Consider the following information:

$\backslash$table$[[,,$Rate of Return if State Occurs$],[$State of Economy,Probability of State,,$],[$Recession$,$of Economy,Stock $A,$Stock B$],[$Normal$,\mathrm{.}21,\mathrm{.}06,-\mathrm{.}21],[$Boom$,\mathrm{.}58,\mathrm{.}09,\mathrm{.}08],[,\mathrm{.}21,\mathrm{.}14,\mathrm{.}25]]$

a$.$ Calculate the expected return for Stocks A and B$.($Do not round intermedjate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ Calculate the standard deviation for Stocks A and B$.($Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$a$.$ Stock A expected return,$\%$