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The number of elements chosen is, the size of the set being drawn from is, the probability of success for a single observation is, the
The number of elements chosen is, the size of the set being drawn from is, the probability of success for a single observation is, the number of successes chosen is,is the mean, andis the expected success rate. Not all of these variables are actually relevant for hypergeometric random variables.
Select the formula for the variance of a hypergeometric random variable.
()
2
()
(1)
()()
2
(1)
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