Flip a coin 12 times.
Each time a Tail comes up you win $3. How much money would you expect to make altogether? | |
[1] | There are 16 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] |
We asked a group of kids how many Popsicles they eat in a week. Here are the results:
What is the probability of the kids to eat exactly 0 Popsicles in a week? | |
[2] | Roll 1 6-sided die.
What is the probability of getting a number bigger than 2? | |
[1] |
We asked a group of boys how many Oranges they eat in a day. Here are the results:
What fraction of the boys eat exactly 0 Oranges in a day? | |
[2] | | You shoot an arrow at a target. There is a 60% chance of scoring a 30 and a 40% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[1] |
An obstacle course has 1 Fences and 1 Ditches. You have a 100% chance of clearing a Fence and a 50% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[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:
| | 0.1 | 0.1 | | 0.15 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller 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:
| | 0.2 | 0.1 | 0.25 | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and smaller than 5? | |
[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 13s?
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[2] |
There are 45 balls in a bag. This is is the probability distribution of their color:
How many green 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 or equal to 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 more than 3? | |
[2] | There are 30 balls in a bag. This is is the probability distribution of their 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:
| | 0.6 | | 0.1 | 0.25 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1? | |
[1] | Flip a coin 4 times.
Each time a head comes up you win $4 and with each tail you lose $4. It costs $2 to play (paid once). How much money would you expect to make altogether? | |
[1] |
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