Over the past several weeks you have assembled a small stock portfolio via the purchase of small amounts of different company stocks. You know that the point of a portfolio is to reduce your overall exposure to systematic risk, but aren't sure exactly what the risk of your new portfolio is$.$ You have purchased the following : $$9,000$ of Ford Stock, $$4,000$ of John Deer Stock, and $$2,000$ of Health Care of America $($HCA$)$ Stock. You have estimated the betas of these stocks to be the following : a $\backslash$beta

of $4\mathrm{.}29$ for Ford, a $\backslash$beta

of $2\mathrm{.}50$ for John Deere, and a $\backslash$beta

of $2\mathrm{.}2$ for HCA. What is the beta of your portfolio? $($Round to $2$ digits$)$