Answer
a)0.17
b)97.92
c) The expected number is really close to the actual result.
Work Step by Step
a)mean=$\frac{535}{576}=0.929$. Hence, $P(X=2)=\frac{0.929^2\cdot e^{-0.929}}{2!}=0.17.$
b)The expected number is:$576\cdot 0.17=97.92.$
c) The expected number is really close to the actual result.