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 smaller than or equal to 2? | |
[1] | A wheel has 6 sections, each a number on it from 1 to 6. 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] |
An obstacle course has 1 Fences and 1 Ditches. You have a 90% 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 group of humans did a math test and here are their scores out of 5:
What fraction of the humans score exactly 4? | |
[2] |
A wheel has 7 blue sections and 8 yellow sections.
What is the probability of getting blue? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | orange | green | blue | | Color |
How many orange balls were in the bag? | |
[1] |
Flip a coin 12 times.
Each time a head comes up you win $3 and with each tail you lose $4. It costs $13 to play (paid once). How much money would you expect to make altogether? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | purple | red | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or blue? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.1 | 0.6 | | blue | green | yellow | | Color |
How many blue balls were in the bag? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | red | yellow | | Color |
Probability of Type
| | 0.1 | 0.9 | | wagon | sedan | | Type |
What is the probability of a car being a red wagon? | |
[2] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in less than 13s?
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[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:
| | 0.6 | | 0.05 | 0.1 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1? | |
[1] |
A group of humans were timed running 100m. Here are the results:
What fraction of the humans run 100m in exactly 17s?
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[2] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 2? | |
[2] |
| A bag has 4 balls with number 2 and 7 balls with a number 3. What will be the average of the numbers of the balls taken out of the bag | |
[1] |