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Over the past 5 years, U.S. airlines average about 1 fatality per month (U.S. Department of...

Over the past 5 years, U.S. airlines average about 1 fatality per month (U.S. Department of Transportation, National Transportation Statistics: 2015). Assume that the probability distribution for x, the number of fatalities per month, can be approximated by a Poisson probability distribution.

(a) What is the probability that no fatalities will occur during any given month? (b) What is the probability that one fatality will occur during a month?
(c) Find E(x) and the standard deviation of x.

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