There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | orange | blue | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being orange? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.1 | 0.7 | | pink | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being pink? | |
[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 | 0.05 | 0.2 | 0.2 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 4? | |
[1] | Roll 84 6-sided dice.
How many times would you expect to get an even number? | |
[1] |
A wheel has 2 sections, each a different color.
What is the probability of getting yellow? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 30, a 50% chance of scoring a 50, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get more than or equal to 5? | |
[1] | We asked a group of dogs how many Sandwiches they eat in a day. Here are the results:
What is the probability of the dogs to eat exactly 3 Sandwiches in a day? | |
[2] |
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] | | You shoot an arrow at a target. You will either score 20 (30% chance), 30 (30% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] |
| A bag has 3 balls with number 2 and 6 balls with a number 3. What will be the average of the numbers of the balls taken out of the bag | |
[1] | Flip a coin 8 times.
Each time a head comes up you win $4 and with each tail you lose $4. It costs $1 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:
| | 0.25 | 0.25 | 0.2 | | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in more than 14s?
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[2] |
You roll a 6 sided die and a 8 sided die.
What is the probability of getting 1 on both dice? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | red | purple | | Color |
Probability of Type
| | 0.8 | 0.2 | | sedan | wagon | | Type |
What is the probability of a car being a red wagon? | |
[2] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] |