Solutions - 5190-08

Construct the joint PMF table for $X$ (customers pitched) and $Y$ (customers who buy):

$X\backslash Y$	2	3
$0$	$0$	${(0.4)}^3$
$1$	$0$	$3(0.6)({0.4}^2)$
$2$	${(0.6)}^2$	$2({0.6}^2)(0.4)$