There are 20 balls in a bag. This is is the probability distribution of their color:
How many yellow balls were in the bag? | |
[1] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in more than 16s?
| |
[2] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | blue | green | red | | Color |
If you choose a random ball from the bag, what is the probability of it being red? | |
[1] | Roll 48 6-sided dice.
How many times would you expect to get less than 1? | |
[1] |
Roll 1 6-sided die.
What is the probability of getting a number smaller than or equal to 1? | |
[1] | We asked a group of girls how many Hot dogs they eat in a week. Here are the results:
What is the probability of the girls to eat exactly 1 Hot dogs in a week? | |
[2] |
A group of dogs did a math test and here are their scores out of 5:
What is the probability of the dogs to score exactly 4? | |
[2] | A group of humans were timed running 100m. Here are the results:
| Time | humans | | 13 | 2 | | 14 | 5 | | 15 | 4 | | 16 | 0 | | 17 | 5 |
What fraction of the humans run 100m in exactly 15s?
| |
[2] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are odd? | |
[1] | A bag has 2 balls with numbers from 1 to 2. You take out 1 ball.
What is the probability of NOT getting the ball with the number 3? | |
[1] |
A bag has 11 balls with numbers from 1 to 11. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 11? | |
[1] | 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:
| | 0.4 | 0.15 | | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 3? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.1 | 0.6 | | yellow | orange | green | | Color |
How many orange balls were in the bag? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 4? | |
[2] |
A bag has 10 red balls, 4 green balls and 7 blue balls. You take out 1 ball.
What is the probability of getting a green ball or a blue ball? | |
[1] |