There are 20 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] | | You shoot an arrow at a target. There is a 60% chance of scoring a 30, a 30% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
Roll 12 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] | A wheel has 7 red sections and 5 orange sections.
What is the probability of getting orange? | |
[1] |
| A bag has 2 balls with number 1 and 3 balls with a number 3. What will be the average of the numbers of the balls taken out of the bag | |
[1] | We asked a group of humans how many Chocolates they eat in a month. Here are the results:
What is the probability of the humans to eat exactly 2 Chocolates in a month? | |
[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:
| | 0.55 | 0.1 | 0.25 | 0.1 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 5? | |
[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:
| | 0.6 | | 0.1 | 0.05 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4? | |
[1] |
A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score exactly 0? | |
[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:
| | 0.25 | | 0.05 | 0.25 | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 2? | |
[1] |
Roll 24 6-sided dice.
How many times would you expect to get a number less than 5? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | purple | pink | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a purple wagon? | |
[2] |
A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 5? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | red | blue | | Color |
Probability of Type
| | 0.3 | 0.7 | | sedan | wagon | | Type |
What is the probability of a car being a blue wagon? | |
[2] |
Flip a coin 4 times.
Each time a Tail comes up you win $3. It costs $4 to play (paid once). 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:
What is the probability of rolling a number that is bigger than 2 and smaller than 3? | |
[1] |
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