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If a random variable X has a Poisson dis...

If a random variable X has a Poisson distribution such that P(X=1)=P(X=2) then
I: its mean is 2 II: its variance is 1

A

only I is true

B

only II is true

C

both I and II are true

D

neither I nor II true

Text Solution

Verified by Experts

The correct Answer is:
A
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