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If X has a binomial distribution, B (n,p...

If X has a binomial distribution, B (n,p) with parameters n and p such that P(X=2)=P(X=3), then E(X) , the mean of variable X, is

A

2 - p

B

3 - p

C

p/2

D

p/3

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The correct Answer is:
B
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