A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 15s?
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[2] | A bag has 7 balls with numbers from 3 to 9. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 7? | |
[1] |
There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.8 | | yellow | orange | blue | | Color |
How many blue balls were in the bag? | |
[1] | We asked a group of dogs how many Oranges they eat in a month. Here are the results:
What fraction of the dogs eat less than 3 Oranges in a month? | |
[2] |
Roll 120 6-sided dice.
How many times would you expect to get more than or equal to 1? | |
[1] | A wheel has 10 sections, each has a reward in dollars, from $1 through to $10.
What prize do we expect to get if we spin the wheel? | |
[1] |
A bag has 4 red balls and 5 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting red for the second ball? | |
[1] | Roll 132 6-sided dice.
How many times would you expect to get a number less than 6? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.5 | 0.2 | | purple | red | orange | | Color |
If you choose a random ball from the bag, what is the probability of it being orange or purple? | |
[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:
| | 0.65 | 0.05 | 0.1 | 0.2 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 4? | |
[1] |
Flip a coin 12 times.
Each time a Tail comes up you win $1. It costs $15 to play (paid once). How much money would you expect to make altogether? | |
[1] | We asked a group of humans how many Icecreams they eat in a month. Here are the results:
What fraction of the humans eat exactly 1 Icecreams in a month? | |
[2] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 16s?
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[2] | There are 24 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] |
A bag has 4 red balls, 4 blue balls and 7 yellow balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | There are 15 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] |
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