The weather forecast says that the chances of rain are 50%. Your chance of being outside today is 50%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[1] | A wheel has 8 sections, each has a reward in dollars, from $1 through to $8.
What prize do we expect to get if we spin the wheel? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.3 | 0.2 | | green | yellow | orange | | Color |
How many yellow balls were in the bag? | |
[1] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 17s?
| |
[2] |
A bag has 6 red balls, 8 blue balls and 5 yellow balls. You take out a yellow ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | Roll 84 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] |
| You shoot an arrow at a target. You will either score 10 (40% chance), 30 (40% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.5 | 0.2 | | blue | yellow | pink | | Color |
How many blue balls were in the bag? | |
[1] |
Roll 120 6-sided dice.
How many times would you expect to get less than or equal to 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:
| | 0.15 | 0.05 | 0.2 | 0.15 | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 2? | |
[1] |
A wheel has 11 sections, each a different color.
What is the probability of getting 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:
| | 0.15 | 0.15 | 0.15 | 0.25 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 3? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | yellow | red | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being blue or yellow? | |
[1] | We asked a group of kids how many Bananas they eat in a month. Here are the results:
What fraction of the kids eat more than 0 Bananas in a month? | |
[2] |
The weather forecast says that the chances of rain are 90%. Your chance of being outside today is 60%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] | Flip a coin 14 times.
How many times would you expect to get Tails? | |
[1] |
A group of humans were timed running 100m. Here are the results:
What is the probability of the humans to run 100m in exactly 16s?
| |
[2] |