The number of lost bags per flight at Ango Airport follows a Poisson distribution with population mean. What is the probability that at least 2bags will be lost in a randomly selected flight?
Let "X=" the number of lost bags per flight: "X\\sim Po(\\lambda)"
Given "\\lambda=0.4"
"=1-\\dfrac{e^{-\\lambda}\\cdot\\lambda^0}{0!}-\\dfrac{e^{-\\lambda}\\cdot\\lambda^1}{1!}"
"=1-\\dfrac{e^{-0.4}\\cdot0.4^0}{0!}-\\dfrac{e^{-0.4}\\cdot0.4^1}{1!}"
"=0.061552"
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