There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | red | yellow | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being yellow or red? | |
[1] | A bag has 6 red balls and 5 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] |
Roll 138 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] | There are 32 balls in a bag. This is is the probability distribution of their color:
| | 0.75 | 0.25 | | yellow | purple | | Color |
How many yellow balls were in the bag? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] | A bag has 6 red balls and 10 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
A group of humans were timed running 100m. Here are the results:
| Time | humans | | 13 | 1 | | 14 | 2 | | 15 | 0 | | 16 | 6 | | 17 | 1 |
What is the probability of the humans to run 100m in exactly 15s?
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[2] | A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[1] |
There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | orange | red | green | | Color |
If you choose a random ball from the bag, what is the probability of it being red or orange? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in exactly 14s?
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[2] |
| You shoot an arrow at a target. There is a 60% chance of scoring a 20 and a 40% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[1] | The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 40%.
What is the probability of getting wet today? | |
[1] |
A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 6 | | 14 | 2 | | 15 | 6 | | 16 | 5 | | 17 | 0 |
What is the probability of the people to run 100m in less than 13s?
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[2] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are 1 or 4? | |
[1] |
Roll 102 6-sided dice.
How many times would you expect to get less than or equal to 4? | |
[1] | A bag has 7 balls with numbers from 2 to 8. You take out 1 ball.
What is the probability of NOT getting the ball with the number 3? | |
[1] |
A bag has 4 balls with numbers from 4 to 7. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 7? | |
[1] |