There are 90 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | We asked a group of humans how many Burgers they eat in a month. Here are the results:
What fraction of the humans eat exactly 0 Burgers in a month? | |
[2] |
A wheel has 9 sections, each has a reward in dollars, from $1 through to $9.
What prize do we expect to get if we spin the wheel? | |
[1] | | You shoot an arrow at a target. There is a 60% chance of scoring a 20, a 30% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
A group of humans were timed running 100m. Here are the results:
| Time | humans | | 13 | 6 | | 14 | 0 | | 15 | 6 | | 16 | 3 | | 17 | 1 |
What is the probability of the humans to run 100m in more than 13s?
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[2] | Flip a coin 6 times.
Each time a head comes up you win $3 and with each tail you lose $3. It costs $5 to play (paid once). How much money would you expect to make altogether? | |
[1] |
There are 2 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] | Roll 126 6-sided dice.
How many times would you expect to get less than 5? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 4? | |
[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 5? | |
[1] |
You flip a coin and roll a 8 sided die.
What is the probability of getting a 4 and a head? | |
[1] | Roll 30 6-sided dice.
How many times would you expect to get a number more than 4? | |
[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:
| | 0.45 | | 0.1 | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 4? | |
[1] | A bag has 8 balls with number 6 and 3 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 6? | |
[1] |
We asked a group of dogs how many Sandwiches they eat in a month. Here are the results:
What is the probability of the dogs to eat less than 3 Sandwiches in a month? | |
[2] | A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score more than 1? | |
[2] |
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