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 less than 2? | |
[2] | The weather forecast says that the chances of rain are 40%. The chance of remembering your umbrella is 40%. Your chance of being outside today are 80%.
What is the probability of getting wet today? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in more than 13s?
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[2] | Flip a coin 6 times.
Each time a head comes up you win $3 and with each tail you lose $4. How much money would you expect to make altogether? | |
[1] |
A bag has 7 balls with numbers from 3 to 9. You take out 1 ball.
What is the probability of NOT getting the ball with the number 8? | |
[1] | Roll 132 6-sided dice.
How many times would you expect to get less than 4? | |
[1] |
| You shoot an arrow at a target. There is a 30% chance of scoring a 20 and a 30% chance of scoring a 30 and a 40% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] | There are 36 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[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 3 and smaller than 2? | |
[1] | We asked a group of boys how many Icecreams they eat in a day. Here are the results:
What fraction of the boys eat less than 0 Icecreams in a day? | |
[2] |
| You shoot an arrow at a target. There is a 20% chance of scoring a 20 and a 40% chance of scoring a 30 and a 40% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | | You shoot an arrow at a target. There is a 80% chance of scoring a 30 and a 20% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[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 or smaller than 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:
| | 0.45 | 0.05 | 0.2 | 0.05 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 20 and a 20% chance of scoring a 40 and a 40% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
An obstacle course has 1 Fences and 1 Ditches. You have a 80% 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] |