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If X has binomial distribution with mean...

If X has binomial distribution with mean np and variance npq, then `(P(X = r))/(P(X = r - 1))` is equal to

A

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

B

`(n-k+1)/kp/q`

C

`(n+1)/kq/p`

D

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

Text Solution

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The correct Answer is:
B
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DISHA PUBLICATION-PROBABILITY -2-EXERCISE - 1 : CONCEPT BUILDER
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