| A bag has 7 balls with number 7 and 5 balls with a number 2. What will be the average of the numbers of the balls taken out of the bag | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 30, a 20% chance of scoring a 50, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
| A bag has 9 balls with number 7 and 2 balls with a number 4. What will be the average of the numbers of the balls taken out of the bag | |
[1] | Roll 66 6-sided dice.
How many times would you expect to get anything except 1? | |
[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 2 or smaller than 4? | |
[1] | Roll 90 6-sided dice.
How many times would you expect to get anything except 2? | |
[1] |
The chances of feeling like icecream are 50%. The chances of being near an icecream store are 60%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | A bag has 2 red balls, 3 blue balls and 4 yellow balls. You take out a yellow ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
Flip 7 coins.
What is the probability of getting 7 heads? | |
[1] | There are 25 balls in a bag. This is is the probability distribution of their color:
How many pink 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 | 0.15 | 0.2 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 13s?
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[2] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score more than 0? | |
[2] | A group of dogs were timed running 100m. Here are the results:
What is the probability of the dogs to run 100m in exactly 16s?
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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:
| | 0.3 | 0.2 | 0.05 | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 2 to 3? | |
[1] | Flip a coin 8 times.
Each time a Tail comes up you win $4. How much money would you expect to make altogether? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get anything except 2? | |
[1] |