To find the variance of a hypergeometric random variable in Example 2.3-4 we used the fact that
Prove this result by making the change of variables k = x − 2 and noting that
References Example 2.3-4
Step 1 of 3:
To find the variance of a hypergeometric random variable.
Let X be the hypergeometric distribution.
Here, n selected from N =
n = x + (n - x) , where ‘x’ selected from and (n - x) selected from .
E(X) = =