Question: To find the variance of a hyper-geometric random variable in Example 2.3-4 we used the fact that Prove this result by making the change of

To find the variance of a hyper-geometric random variable in Example 2.3-4 we used the fact that
To find the variance of a hyper-geometric random variable in

Prove this result by making the change of variables k = x ˆ’ 2 and noting that

To find the variance of a hyper-geometric random variable in

ElX(X-1)] = NI(NI-1)(n)(n-1 ) N(N 1) nn(n-1) -2

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