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:
| | 0.35 | 0.25 | 0.15 | | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 and smaller than 5? | |
[1] | We asked a group of boys how many Bowls of Ramen they eat in a day. Here are the results:
boys
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| Bowls of Ramen | 0 | 6 | | 1 | 5 | | 2 | | | 3 | 4 |
What is the probability of the boys to eat exactly 2 Bowls of Ramen in a day? | |
[2] |
| You shoot an arrow at a target. You will either score 20 (50% chance), 40 (20% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] | | You shoot an arrow at a target. You will either score 10 (10% chance), 30 (30% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
Roll 138 6-sided dice.
How many times would you expect to get less than 5? | |
[1] | Roll 30 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
An obstacle course has 2 Fences and 1 Ditches. You have a 100% chance of clearing a Fence and a 90% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | | You shoot an arrow at a target. There is a 90% chance of scoring a 10 and a 10% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 3? | |
[2] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 3? | |
[2] |
A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of getting the ball with the number 11? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.3 | 0.4 | | pink | red | yellow | | Color |
How many yellow balls were in the bag? | |
[1] |
A bag has 6 balls with numbers from 5 to 10. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 4? | |
[2] |
There are 44 balls in a bag. This is is the probability distribution of their color:
How many green 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:
| | 0.15 | 0.1 | 0.05 | 0.05 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 4? | |
[1] |
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