There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | | 0.7 | | purple | pink | blue | | Color |
How many pink balls were in the bag? | |
[1] | A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 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:
| | 0.15 | 0.25 | 0.15 | | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 3? | |
[1] | Flip a coin 6 times.
Each time a head comes up you win $2 and with each tail you lose $2. It costs $4 to play (paid once). How much money would you expect to make altogether? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | green | orange | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[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 | 0.15 | 0.2 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] |
We asked a group of boys how many Bowls of Ramen they eat in a month. Here are the results:
| Bowls of Ramen | boys | | 0 | 0 | | 1 | 5 | | 2 | 1 | | 3 | 4 |
What is the probability of the boys to eat less than 4 Bowls of Ramen in a month? | |
[2] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | green | purple | | Color |
Probability of Type
| | 0.6 | 0.4 | | wagon | sedan | | Type |
What is the probability of a car being a purple sedan? | |
[2] |
A bag has 3 red balls and 6 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[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 or equal to 4? | |
[1] |
A group of dogs were timed running 100m. Here are the results:
What is the probability of the dogs to run 100m in less than 15s?
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[2] | A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in more than 14s?
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[2] |
Roll 2 6-sided dice.
What is the probability of getting a 1 on both dice? | |
[1] | A bag has 2 red balls and 8 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] |
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