A wheel has 8 sections, each has a reward in dollars, from $1 through to $8.
What prize do we expect to get if we spin the wheel? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score more than 4? | |
[2] |
| You shoot an arrow at a target. You will either score 20 (50% chance), 30 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | Roll 90 6-sided dice.
How many times would you expect to get more than 6? | |
[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 | 0.15 | | 0.15 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 4? | |
[1] | There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.2 | 0.3 | | purple | orange | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it being yellow or purple? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 14s?
| |
[2] | Flip a coin 6 times.
Each time a head comes up you win $2 and with each tail you lose $4. How much money would you expect to make altogether? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] | We asked a group of humans how many Burgers they eat in a week. Here are the results:
What is the probability of the humans to eat less than 4 Burgers in a week? | |
[2] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | pink | orange | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink or yellow? | |
[1] | 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 green? | |
[1] |
Roll 150 6-sided dice.
How many times would you expect to get less than or equal to 6? | |
[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:
| | 0.55 | | 0.1 | 0.25 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 6? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 3 or a 6 and a head? | |
[1] |
There are 28 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |