| You shoot an arrow at a target. There is a 30% chance of scoring a 20 and a 40% chance of scoring a 40 and a 30% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in less than 17s?
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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:
| | 0.4 | 0.15 | 0.1 | 0.15 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 3? | |
[1] | | 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] |
A bag has 5 balls with numbers from 3 to 7. You take out 1 ball.
What is the probability of getting a ball with a number less 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 a 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 a number that is smaller than or equal to 3? | |
[1] | 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] |
Roll 30 6-sided dice.
How many times would you expect to get more than 2? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | pink | green | purple | | Color |
How many green balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | yellow | pink | | Color |
Probability of Type
| | 0.8 | 0.2 | | wagon | sedan | | Type |
What is the probability of a car being a yellow sedan? | |
[2] | A bag has 4 red balls, 8 green balls and 7 blue balls. You take out 1 ball.
What is the probability of getting a red ball or a blue ball? | |
[1] |
A bag has 4 red balls, 8 green balls and 4 blue balls. You take out 1 ball.
What is the probability of NOT getting a red ball? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score more than 5? | |
[2] |
A bag has 5 red balls and 5 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 16s?
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[2] |
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