There are 20 balls in a bag. This is is the probability distribution of their color:
How many yellow balls were in the bag? | |
[1] | Roll 84 6-sided dice.
How many times would you expect to get less than or equal to 6? | |
[1] |
A bag has 2 balls with numbers from 2 to 3. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 4? | |
[1] | We asked a group of kids how many Pillows they eat in a day. Here are the results:
What fraction of the kids eat more than 2 Pillows in a day? | |
[2] |
We asked a group of boys how many Pizzas they eat in a week. Here are the results:
What is the probability of the boys to eat more than 1 Pizzas in a week? | |
[2] | | You shoot an arrow at a target. You will either score 20 (30% chance), 40 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
Flip a coin 16 times.
Each time a head comes up you win $4 and with each tail you lose $4. It costs $1 to play (paid once). How much money would you expect to make altogether? | |
[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 17s?
| |
[2] |
A wheel has 3 pink sections and 3 purple sections.
What is the probability of getting pink? | |
[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:
| | 0.2 | 0.15 | 0.2 | 0.15 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 5? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in exactly 15s?
| |
[2] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 17s?
| |
[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 3 or a 5 and a head? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | green | orange | pink | | Color |
How many pink balls were in the bag? | |
[1] |
Roll 90 6-sided dice.
How many times would you expect to get less than or equal to 5? | |
[1] |