Mathematics, 25.02.2020 23:09 oscar4hunnid

Cognitive scientists designed an experiment to measure x, the number of times a reader's eye fixated on a single word before moving past that word. For the experiment, x was found to have a mean of 1.91.9. Suppose one of the readers in the experiment is randomly selected, and assume that x has a Poisson distribution.
(a) Find P(x=0).
(b) Find P(x>1).
(c) Find P(x≤3).

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