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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-r)/(r-1)p/q`

B

`(n-r+1)/rp/q`

C

`(n+1)/rp/q`

D

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

Text Solution

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The correct Answer is:
B
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