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1. So the question is about Poisson distributions and I missed a lesson because I was sick and I can do the rest of the questions, just not this one!
You are given that X~Po(L) and P(X=3)=5/9(P(X=5)).
i) calculate L
ii) what is P(X=L)?
(I'm using L to represent the Greek letter lambda, which is usually used for Poisson distributions!)
I'd really appreciate any help! I just have no idea where to start
2. (Original post by phoebeg76)
So the question is about Poisson distributions and I missed a lesson because I was sick and I can do the rest of the questions, just not this one!
You are given that X~Po(L) and P(X=3)=5/9(P(X=5)).
i) calculate L
ii) what is P(X=L)?
(I'm using L to represent the Greek letter lambda, which is usually used for Poisson distributions!)
I'd really appreciate any help! I just have no idea where to start
P(x=3) = 5/9 P(X=5)

(e-L. L3)/3! = 5/9 (e-L. L5)/5!

cancel the e-L etc etc

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Updated: January 25, 2015
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