You roll four dice and look for the number of sixes. The random variable is then
When you roll a die, you either get a , or you don’t. Call each a success. The experiment then follows the binomial distribution with
Now you can calculate the probability of getting either , , , or sixes.
You do that by using the formula above. Then you can put the numbers you get into a table:
| || 0 || 1 || 2 || 3 || 4 |
| || || || || || |
This is the probability distribution of .