Question 1054380
P(x = 2)
The syntax is poissonpdf(mean, x-value).
P(x = 2) = poissonpdf(5, 2) = .0842
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P(x>=4) = 1 - P(x <= 3) 
The syntax is poissioncdf(mean, largest x-value).
P(x>=4) = 1 - poissoncdf(5,3) = 1 - .2650 = .7350
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P(x = 0 ) = poissonpdf(5, 0) = .0067