atop $2$

Subuthute $x-4,n-8,$ and $p-0\mathrm{.}45$ into the binomial pmit hormula below and solve. $($Round your final answer to three decimal places.$)$

$k(x$;$n,p)=(\frac{n}{x})p^2(1-p{)}^{n-x}$

$=(\frac{8}{4})(0\mathrm{.}45{)}^4(1-0\mathrm{.}45{)}^{8-4}$

$=()(0\mathrm{.}45{)}^4(0\mathrm{.}55{)}^4$

$=()$