A wheel has 8 sections, each a number on it from 1 to 8. If you spin an odd number you win that amount of dollars, if you spin an even number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] | A bag has 6 balls with number 3 and 6 balls with a number 4. You take out 1 ball.
What is the probability of getting the ball with the number 4? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score exactly 1? | |
[2] | There are 10 balls in a bag. This is is the probability distribution of their color:
If you choose a random ball from the bag, what is the probability of it not being blue or purple? | |
[1] |
You roll a 9 sided die and a 10 sided die.
What is the probability of getting 6 on both dice? | |
[1] | There are 24 balls in a bag. This is is the probability distribution of their 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 40% chance of scoring a 40 and a 40% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 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 exactly 15s?
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[2] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.5 | 0.1 | | green | purple | yellow | | Color |
How many green balls were in the bag? | |
[1] |
We asked a group of dogs how many Burgers they eat in a week. Here are the results:
What fraction of the dogs eat less than 0 Burgers in a week? | |
[2] | A bag has 2 balls with number 5 and 4 balls with a number 6. You take out 1 ball.
What is the probability of getting the ball with the number 6? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 20 and a 20% chance of scoring a 30 and a 40% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.2 | 0.6 | | yellow | pink | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or yellow? | |
[1] |
A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in exactly 17s?
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[2] |