There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | | 0.8 | | blue | yellow | green | | Color |
How many yellow balls were in the bag? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get less than 4? | |
[1] |
There are 24 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 1 or a 4 and a tail? | |
[1] |
A bag has 6 balls with numbers from 4 to 9. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[1] | A group of humans were timed running 100m. Here are the results:
What fraction of the humans run 100m in less than 14s?
| |
[2] |
We asked a group of boys how many Apples they eat in a day. Here are the results:
What is the probability of the boys to eat exactly 2 Apples in a day? | |
[2] | Roll 78 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
Roll 54 6-sided dice.
How many times would you expect to get more than or equal to 3? | |
[1] | A bag has 7 balls with numbers from 3 to 9. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 7? | |
[1] |
Flip 3 coins.
What is the probability of getting 3 tails? | |
[1] | Roll 78 6-sided dice.
How many times would you expect to get more than 3? | |
[1] |
You roll a 5 sided die and a 3 sided die.
What is the probability of getting 4 on both dice? | |
[1] | A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 5 | | 14 | 0 | | 15 | 0 | | 16 | 2 | | 17 | 3 |
What is the probability of the people to run 100m in less than 15s?
| |
[2] |
A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.35 | 0.1 | 0.25 | 0.15 | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 1? | |
[1] | Roll 78 6-sided dice.
How many times would you expect to get less than 5? | |
[1] |
Flip a coin 2 times.
Each time a Head comes up you win $1. How much money would you expect to make altogether? | |
[1] |