Flip a coin 14 times.
Each time a Tail comes up you win $3. It costs $21 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:
| | 0.1 | 0.4 | 0.5 | | yellow | red | orange | | Color |
How many yellow balls were in the bag? | |
[1] |
A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in exactly 17s?
| |
[2] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 6 and a tail? | |
[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 smaller than 1? | |
[1] | We asked a group of girls how many Burgers they eat in a week. Here are the results:
What is the probability of the girls to eat less than 0 Burgers in a week? | |
[2] |
Roll 12 6-sided dice.
How many times would you expect to get more than or equal to 5? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | | 0.4 | | yellow | red | green | | Color |
How many green balls were in the bag? | |
[1] |
A bag has 8 red balls, 9 blue balls and 2 yellow balls. You take out a yellow ball, then a blue ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[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 | 0.05 | 0.05 | 0.1 | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3? | |
[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 4 and smaller than 3? | |
[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 exactly 0? | |
[2] |
A bag has 7 red balls and 4 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | blue | purple | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being purple? | |
[1] |
Roll 150 6-sided dice.
How many times would you expect to get more than or equal to 3? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.8 | 0.2 | | pink | blue | | Color |
Probability of Type
| | 0.7 | 0.3 | | sedan | wagon | | Type |
What is the probability of a car being a pink wagon? | |
[2] |
|