Roll 138 6-sided dice.
How many times would you expect to get less than 2? | |
[1] | The weather forecast says that the chances of rain are 90%. Your chance of being outside today is 70%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[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:
| | 0.25 | 0.2 | 0.2 | | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 and smaller than 5? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 17s?
| |
[2] |
The weather forecast says that the chances of rain are 20%. Your chance of being outside today is 50%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] | Roll 150 6-sided dice.
How many times would you expect to get less than or equal to 5? | |
[1] |
A wheel has 7 sections, each has a reward in dollars, from $1 through to $7.
What prize do we expect to get if we spin the wheel? | |
[1] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in less than 14s?
| |
[2] |
The chances of feeling like icecream are 70%. The chances of being near an icecream store are 70%. There is a 30% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | Flip a coin 14 times.
Each time a head comes up you win $3 and with each tail you lose $1. 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:
| | 0.25 | 0.25 | 0.05 | 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 3? | |
[1] | The chances of feeling like icecream are 70%. The chances of being near an icecream store are 40%. There is a 10% chance that you lost all your money.
What is the probability of having icecream? | |
[1] |
A bag has 6 red balls and 10 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | yellow | blue | red | | Color |
How many blue 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:
| | 0.2 | 0.2 | 0.1 | 0.15 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 3? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | | 0.8 | | red | yellow | purple | | Color |
How many red balls were in the bag? | |
[1] |
Flip a coin 16 times.
Each time a Head comes up you win $3. How much money would you expect to make altogether? | |
[1] | A bag has 3 balls with numbers from 4 to 6. You take out 1 ball.
What is the probability of NOT getting the ball with the number 5? | |
[1] |
|