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 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 | orange | | Color |
Probability of Type
| | 1 | | wagon | sedan | | Type |
What is the probability of a car being a orange wagon? | |
[2] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | | 0.9 | | orange | blue | pink | | Color |
If you choose a random ball from the bag, what is the probability of it being pink or orange? | |
[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 | 0.1 | | 0.25 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 and smaller than 1? | |
[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 | | 0.15 | 0.2 | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 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:
| | 0.25 | 0.25 | 0.25 | 0.25 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 4 to 5? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] | Roll 1 6-sided die.
What is the probability of getting a 5? | |
[1] |
Flip a coin 18 times.
Each time a Tail comes up you win $3. It costs $25 to play (paid once). How much money would you expect to make altogether? | |
[1] | A wheel has 6 sections, each a number on it from 1 to 6. If you spin an even number you win that amount of dollars, if you spin an odd number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] |
Flip a coin 10 times.
How many times would you expect to get Heads? | |
[1] | A bag has 6 red balls, 4 blue balls and 9 yellow balls. You take out a blue ball, then a yellow ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in more than 17s?
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[2] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in exactly 17s?
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[2] |
A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in less than 16s?
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[2] | An obstacle course has 1 Fences and 2 Ditches. You have a 90% chance of clearing a Fence and a 90% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
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