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A poisson distribution with m = 1.2 governs the number of fireflies that flash in a...

A poisson distribution with m = 1.2 governs the number of fireflies that flash in a 10 second period during an August evening in the yard. Determine the probability that:

a) 2 fireflies flash.

b) less than or equal 3 flash.

c) 6 fireflies flash in a 30 second period.
math   Statistics-And-Probability   
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