Excel Online Structured Activity: CAPM, portfolio risk, and return

Consider the following information for three stocks, Stocks A$,$ B$,$ and C$.$ The returns on the three stocks are positively correlated, but they are not perfectly correlated. $($That is$,$ each of the correlation coefficients is between $0$ and $1.)$

$\backslash$table$[[$Stock$,$Expected Return,Standard Deviation,Beta$],[$A$,8\mathrm{.}72\%,15\%,0\mathrm{.}7],[$B$,10\mathrm{.}56,15,1\mathrm{.}1],[$C$,12\mathrm{.}86,15,1\mathrm{.}6]]$

Fund $P$ has one$-$third of its funds invested in each of the three stocks. The riskfree rate is $5\mathrm{.}5\%,$ and the market is in equilibrium. $($That is$,$ required returns equal expected returns.$)$ The data has been collected in the Microsoft Excel Online file below. Open the spreadsheet and perform the required analysis to answer the questions below.

Open spreadsheet

a$.$ What is the market risk premium $(($:$r_M-r_{RF}$