suppose you have $10000$ dollar that you want to invest in stocks and Y You decided to put $4000$ dollars in stock X$..$ Answer the below questions using this information : stock X stock Y SD $0\mathrm{.}170\mathrm{.}24$ R $0\mathrm{.}240\mathrm{.}17$ beta $0\mathrm{.}81\mathrm{.}8$ correlation$=-0\mathrm{.}88$

What is the standard deviation if the portfolio