Consider the following information:

$\backslash$table$[[,\backslash$table$[[$Probability of$],[$State$]],$Rate of Return if State Occurs$],[$Economy$,$of Economy,Stock A$,$Stock B$],[$Recession$,\mathrm{.}23,\mathrm{.}025,-\mathrm{.}28],[$Normal$,\mathrm{.}58,\mathrm{.}105,\mathrm{.}18],[$Boom$,\mathrm{.}19,\mathrm{.}170,\mathrm{.}41]]$

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