The increased number of small commuter planes in major airports has heightened concern over air safety. An eastern airport has recorded a monthly average of nine near misses on landings and takeoffs in the past 5 years. (Round your answers to three decimal places.) (a) Find the probability that during a given month there are no near misses on landings and takeoffs at the airport. (b) Find the probability that during a given month there are four near misses. (c) Find the probability that there are at least four near misses during a particular month.

Q: both answers are only partly right

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Q: could you maybe elaborate a bit more and how you find these answers? especially with b?

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