Answer
$E(0)=226.7136$
$E(1)=211.3926$
$E(2)=98.5536$
$E(3)=30.6432$
$E(4~or~more~hits)=8.6976$
Work Step by Step
$P(0)=0.3936$
$P(1)=0.3670$
$P(2)=0.1711$
$P(3)=0.0532$
$P(4~or~more~hits)=0.0151$
Total: $n=576~rockets$.
$E(0)=nP(0)=576\times0.3936=226.7136$
$E(1)=nP(1)=576\times0.3670=211.3926$
$E(2)=nP(2)=576\times0.1711=98.5536$
$E(3)=nP(3)=576\times0.0532=30.6432$
$E(4~or~more~hits)=nP(4~or~more~hits)=576\times0.0151=8.6976$
