Elle holds a $$7,500$ portfolio that consists of four stocks. Her investment in each stock, as well as each stock$$s beta, is listed in the following table:

Stock

Investment

Beta

Standard Deviation

Perpetualcold Refrigeration Co$.($PRC$)$ $$2,6251\mathrm{.}0018\mathrm{.}00\%$

Kulatsu Motors Co$.($KMC$)$ $$1,5001\mathrm{.}7011\mathrm{.}50\%$

Western Gas & Electric Co$.($WGC$)$ $$1,1251\mathrm{.}1520\mathrm{.}00\%$

Flitcom Corp. $($FC$)$ $$2,2500\mathrm{.}6025\mathrm{.}50\%$