If X be binomial distribution with mean ...

If X be binomial distribution with mean np and variance npq, then find the`(P(x=k))/(P(x=k-1))`.

A

`(n-k)/(k-1).p/q`

B

`(n-k+1)/(k).p/q`

C

`(n+1)/(k).q/p`

D

`(n-1)/(k+1).q/p`

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The correct Answer is:

B

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