A bag has 3 balls with numbers from 4 to 6. You take out 1 ball.
What is the probability of getting a ball with an even number? | |
[1] | | You shoot an arrow at a target. You will either score 20 (10% chance), 30 (40% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] |
There are 55 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] | The weather forecast says that the chances of rain are 30%. The chance of remembering your umbrella is 70%. Your chance of being outside today are 90%.
What is the probability of getting wet today? | |
[1] |
Roll 84 6-sided dice.
How many times would you expect to get more than or equal to 1? | |
[1] | | You shoot an arrow at a target. You will either score 10 (50% chance), 40 (30% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
A wheel has 11 sections, each a number on it from 1 to 11. 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] | 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 | 0.25 | 0.2 | 0.15 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 2? | |
[1] |
We asked a group of kids how many Peaches they eat in a day. Here are the results:
What fraction of the kids eat less than 0 Peaches in a day? | |
[2] | Flip a coin 14 times.
Each time a Head comes up you win $1. How much money would you expect to make altogether? | |
[1] |
Flip a coin 8 times.
Each time a head comes up you win $4 and with each tail you lose $4. It costs $2 to play (paid once). How much money would you expect to make altogether? | |
[1] | We asked a group of girls how many Chocolates they eat in a day. Here are the results:
What fraction of the girls eat exactly 1 Chocolates in a day? | |
[2] |
A bag has 7 balls with number 7 and 9 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 1? | |
[1] | Roll 24 6-sided dice.
How many times would you expect to get anything except 4? | |
[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 5 and smaller than 4? | |
[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:
| | 0.05 | | 0.15 | 0.05 | 0.75 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] |
Roll 1 6-sided die.
What is the probability of getting an odd number? | |
[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:
| | 0.15 | 0.2 | 0.1 | 0.05 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 4? | |
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