Sam Has Her Portfolio Invested as Indicated in the Following

Essay

Sam has her portfolio invested as indicated in the following table.
$\begin{array}{|l|c|c|}\hline \text { Stock } & \$ ' s \text { Invested } & \text { Beta } \\\hline \text { LCAV } & \$ 150,000 & 0.50 \\\hline \text { DFIB } & \$ 100,000 & 0.75 \\\hline \text { GLW } & \$ 100,000 & 0.80 \\\hline \text { DLM } & \$ 50,000 & 1.45 \\\hline\end{array}$ Find the beta of Sam's portfolio.