Roll 12 6-sided dice.
How many times would you expect to get less than 2? | |
[1] | Flip a coin 2 times.
Each time a head comes up you win $3 and with each tail you lose $3. It costs $2 to play (paid once). How much money would you expect to make altogether? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 5? | |
[1] | A wheel has 4 yellow sections and 3 red sections.
What is the probability of getting red? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.3 | 0.3 | | green | pink | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being green? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in more than 15s?
| |
[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:
| | 0.55 | 0.2 | 0.2 | | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 2? | |
[1] | A bag has 4 balls with number 9 and 2 balls with a number 8. You take out 1 ball.
What is the probability of getting the ball with the number 8? | |
[1] |
Roll 120 6-sided dice.
How many times would you expect to get more than 1? | |
[1] | A bag has 10 balls with numbers from 1 to 10. You take out 1 ball.
What is the probability of NOT getting the ball with the number 1? | |
[1] |
There are 48 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] | There are 30 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 being blue? | |
[1] |
A wheel has 13 sections, each a number on it from 1 to 13. 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 group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in less than 15s?
| |
[2] |
There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.3 | 0.6 | | pink | blue | yellow | | Color |
How many yellow 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:
What is the probability of rolling a number that is bigger than 1 and smaller than 2? | |
[1] |
Flip a coin 6 times.
Each time a head comes up you win $2 and with each tail you lose $2. How much money would you expect to make altogether? | |
[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 | | 0.15 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 or smaller than 5? | |
[1] |
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