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:
| | 0.1 | 0.1 | 0.1 | 0.1 | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 4? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] |
There are 36 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score more than 4? | |
[2] |
Flip 1 coin.
What is the probability of getting a head? | |
[1] | Roll 1 6-sided die.
What is the probability of NOT getting a 3? | |
[1] |
Roll 132 6-sided dice.
How many times would you expect to get more than or equal to 4? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.2 | 0.8 | | blue | pink | | Color |
Probability of Type
| | 0.1 | 0.9 | | wagon | sedan | | Type |
What is the probability of a car being a pink sedan? | |
[2] |
A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 6 | | 14 | 4 | | 15 | 1 | | 16 | 2 | | 17 | 1 |
What fraction of the people run 100m in more than 13s?
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[2] | | You shoot an arrow at a target. You will either score 20 (20% chance), 30 (10% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 16s?
| |
[2] | | You shoot an arrow at a target. There is a 70% chance of scoring a 10 and a 30% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 3 red balls, 4 green balls and 2 blue balls. You take out 1 ball.
What is the probability of getting a red ball or a green ball? | |
[1] | Roll 108 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] |
Roll 102 6-sided dice.
How many times would you expect to get more than or equal to 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:
What is the probability of rolling a number that is bigger than or equal to 1? | |
[1] |
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