The U.S. Department of the Interior wants to describe the movement of wild horses in Nevada. Researchers in the department travel to a particular area in Nevada to tag 100 horses in a total population of 1,000. Six months later the researchers return to the same area to find out how many horses remained in the area. The researchers look for tagged horses in a sample of 200.
The parameter values for this hypergeometric distribution are the population size of 1,000, sample size (Trials) of 200, and an initial success rate of 100 out of 1,000 (or a probability of 10% — 0.1 — of finding tagged horses. The result would be a distribution showing the probability of observing x number of tagged horses.