Intermediate Mathematics - Sampling without replacement
Sampling without replacement
Consider a population that is finite, that is, it is of a given size so
that the number of items is countable.
Consider a population that contains two different kinds of items.
Examples of this type of population include a box containing both red and
green balls, or a group of people with both males and females, or a set of
cards which are numbered so as to include both odd and even numbers.
Choose a random sample from this population without replacement.  The
number, X, of a given kind of item in the sample is known as a
hypergeometric random variable. 
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