Which is a hypergeometric distribution? I think it is the 2nd experiment, but can someone explain why, and why isn't the other distribution a hypergeometric? Experiment 1- You are picking 100 people pout 220 million people, out of that 100 how many of them are male if 50 percent are males. Experiment 2- You flip a coin to decide to drives the car, and assume you have to drive the car 50 times this week, and the coin is fair? Which one is a "hypergeometric distribution"?

> The **hypergeometric distribution** describes the probability of $k$ successes in $n$ draws, without replacement, from a finite population of size $N$ that contains exactly $K$ successes, wherein each draw is either a success or a failure. In contrast, the **binomial distribution** describes the probability of $k$ successes in $n$ draws with replacement.

Therefore the first problem corresponds to hypergeometric distribution, whereas the second corresponds to the binomial.