Please use excel

$\backslash$table$[[,,$Rate of Return If State Occurs$],[$State of Economy,Probability of State,,,$],[$Boom$,$of Economy,Stock A$,$Stock B$,$Stock C$],[$Normal$,\mathrm{.}20,\mathrm{.}20,\mathrm{.}32,\mathrm{.}54],[$Bust$,\mathrm{.}45,\mathrm{.}18,16,\mathrm{.}14],[,\mathrm{.}35,\mathrm{.}02,-\mathrm{.}34,-\mathrm{.}42]]$

a$-1.$ If your portfolio is invested $40$ percent each in A and $B$ and $20$ percent in $C,$ what is the portfolio expected return? $($Do not round Intermedlate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

a$-2.$ What is the varlance? $($Do not round Intermedlate calculations and round your answer to $5$ decimal places, e$.$g$.,16161.)$

a$-3.$ What is the standard deviation? $($Do not round Intermedlate calculatlons and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ If the expected T$-$bill rate is $3\mathrm{.}80$ percent, what is the expected risk premium on the portfolio? $($Do not round intermedlate calculations and enter your answer as a percent rounded to $2$ declmal places, e$.$g$.,32\mathrm{.}16.)$

c$-1.$ If the expected Inflation rate is $3\mathrm{.}40$ percent, what are the approximate and exact expected real returns on the porfollio? $($Do not round Intermedlate calculatlons and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

c$-2.$ What are the approximate and exact expected real risk premiums on the porffolio? $($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$-1.$ Pertiolio expected return,$6\mathrm{.}28,1$:$],[$a$-2.$ Varianse,,$],[$a$-3.$ Srandard deviation,,$(2x)$