if there are 20 white marbles and 32 black marbles in a bag
what is the probability of drawing 20 marbles where 10 are white and 10 are black ?
is there a formula ?
Yes. Read this: Hypergeometric distribution - Wikipedia, the free encyclopedia.
In your case: N = 52, n = 20, m = 20, k = 10.
Hello, addison!
There are: . possible outcomes.There are 20 white marbles and 32 black marbles in a bag.
What is the probability of drawing 20 marbles where 10 are white and 10 are black?
To draw 10 white marbles, there are: . ways.
To draw 10 black marbles, there are: . ways.
. . Hence, there are:\ . ways to get 10 white and 10 black marbles.
Therefore: .