Portfolio risk and return

Anusha holds a $$10,000$ portfolio that consists of four stocks. Her investment in each stock, as well as each stock's beta and standard deviation, is listed in the following table:

$\backslash$table$[[$Stock$,$Investment,Beta,Standard Deviation$],[$Perpetualcold Refrigeration Co$.($PRC$),$$$3,500,1\mathrm{.}00,12\mathrm{.}00\%$