There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.7 | | 0.3 | | purple | blue | green | | Color |
How many blue balls were in the bag? | |
[1] | | You shoot an arrow at a target. There is a 20% chance of scoring a 10 and a 20% chance of scoring a 30 and a 60% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
We asked a group of boys how many Hot dogs they eat in a month. Here are the results:
What is the probability of the boys to eat less than 4 Hot dogs in a month? | |
[2] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in less than 15s?
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[2] |
A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in exactly 17s?
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[2] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.3 | 0.1 | | blue | yellow | pink | | Color |
How many blue balls were in the bag? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[1] | There are 40 balls in a bag. This is is the probability distribution of their color:
How many yellow balls were in the bag? | |
[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:
| | 0.05 | | 0.2 | 0.1 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 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:
| | 0.2 | 0.05 | 0.1 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 4? | |
[1] |
| You shoot an arrow at a target. There is a 30% chance of scoring a 10 and a 40% chance of scoring a 30 and a 30% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | pink | orange | | Color |
Probability of Type
| | 0.5 | 0.5 | | wagon | sedan | | Type |
What is the probability of a car being a pink sedan? | |
[2] |
You flip a coin and roll a 4 sided die.
What is the probability of getting a 4 and a tail? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | orange | yellow | | Color |
Probability of Type
| | 0.8 | 0.2 | | wagon | sedan | | Type |
What is the probability of a car being a orange sedan? | |
[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number less than 1 and a tail? | |
[1] |