## Elementary Statistics (12th Edition)

a) $P(X=26)=\frac{30.4^{26}\cdot e^{-30.4}}{26!}=0.0558.$ Expected number:$34\cdot0.0558=1.9$, this is very close to the actual number. b)$P(X=30)=\frac{30.4^{30}\cdot e^{-30.4}}{30!}=0.0724.$ Expected number:$34\cdot0.0724=2.46$, this is very far from the actual number.