Consider the following information:

$\backslash$table$[[,,$Rate of Return if State Occurs$],[$State of Economy,Probability of State of Economy,Stock A$,$Stock B$],[$Recession$,\mathrm{.}18,\mathrm{.}09,-\mathrm{.}13],[$Normal$,\mathrm{.}59,\mathrm{.}12,\mathrm{.}16],[$Boom$,\mathrm{.}23,\mathrm{.}17,\mathrm{.}33]]$

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

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$.,32\mathrm{.}16.)$