| You shoot an arrow at a target. There is a 60% chance of scoring a 20, a 30% chance of scoring a 50, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | A bag has 6 red balls and 9 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get more than 3? | |
[1] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in more than 13s?
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[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:
| | 0.8 | | 0.05 | 0.05 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 2 to 5? | |
[1] | A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 6 | | 14 | 3 | | 15 | 6 | | 16 | 1 | | 17 | 5 |
What is the probability of the people to run 100m in exactly 16s?
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[2] |
We asked a group of boys how many Hot dogs they eat in a month. Here are the results:
What fraction of the boys eat exactly 4 Hot dogs in a month? | |
[2] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.9 | | 0.1 | | pink | purple | blue | | Color |
How many purple balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.2 | 0.8 | | orange | green | | Color |
Probability of Type
| | 1 | | sedan | wagon | | Type |
What is the probability of a car being a green sedan? | |
[2] | Flip a coin 16 times.
Each time a Tail comes up you win $4. How much money would you expect to make altogether? | |
[1] |
A bag has 4 red balls and 9 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting red for the second ball? | |
[1] | A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 17s?
| |
[2] |
A group of humans were timed running 100m. Here are the results:
humans
| |
| Time | 13 | 1 | | 14 | 5 | | 15 | 6 | | 16 | 5 | | 17 | 5 |
What fraction of the humans run 100m in exactly 13s?
| |
[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:
| | 0.2 | 0.25 | | 0.2 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 or smaller than 4? | |
[1] |
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