SOLUTION: compute the following poisson probabilities (to 4 decimal places) using the formula: a. P(X=3), If mean=2.5 b. P(X<=1), If mean=2.0 c. P(X>=2), If mean=3.0

Algebra ->  Probability-and-statistics -> SOLUTION: compute the following poisson probabilities (to 4 decimal places) using the formula: a. P(X=3), If mean=2.5 b. P(X<=1), If mean=2.0 c. P(X>=2), If mean=3.0       Log On


   

Question 1171635: compute the following poisson probabilities (to 4 decimal places) using the formula:
a. P(X=3), If mean=2.5
b. P(X<=1), If mean=2.0
c. P(X>=2), If mean=3.0
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
e^(-2.5)2.5^3/3!=0.2138
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this would be x=0 and x=1
e^-2.5=0.0821
e^(-2.5)*2.5=0.2052
that sum is 0.2873
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for x>=2, that is 1- p (x<=1) or 0.7127