Let X~B(n,p), if E(X)=5,Var(X)=2.5 then ...

Let `X~B(n,p)`, if E(X)=5,Var(X)`=2.5` then `P(X lt 1)` is equal to

A

`(1/2)^(11)`

B

`(1/2)^(10)`

C

`(1/2)^6`

D

`(1/2)^9`

Verified by Experts

The correct Answer is:

B

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