There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | blue | red | orange | | Color |
How many orange balls were in the bag? | |
[1] | Roll 132 6-sided dice.
How many times would you expect to get less than 3? | |
[1] |
A wheel has 11 sections, each has a reward in dollars, from $1 through to $11.
What prize do we expect to get if we spin the wheel? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in less than 16s?
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[2] |
A bag has 5 red balls, 6 green balls and 3 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[1] | We asked a group of people how many Pillows they eat in a day. Here are the results:
What is the probability of the people to eat less than 0 Pillows in a day? | |
[2] |
Roll 12 6-sided dice.
How many times would you expect to get more than or equal to 2? | |
[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 less than 5? | |
[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:
| | 0.45 | 0.2 | 0.2 | 0.05 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 or smaller than 4? | |
[1] | Roll 84 6-sided dice.
How many times would you expect to get more than 1? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.9 | | 0.1 | | purple | green | orange | | Color |
How many purple balls were in the bag? | |
[1] | A group of people were timed running 100m. Here are the results:
What is the probability of the people to run 100m in less than 13s?
| |
[2] |
A bag has 6 red balls, 8 blue balls and 4 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | A bag has 5 balls with numbers from 5 to 9. You take out 1 ball.
What is the probability of NOT getting the ball with the number 10? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[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:
What is the probability of rolling a number that is bigger than 2 and smaller than 4? | |
[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:
What is the probability of rolling 2 or 5? | |
[1] |