| A bag has 8 balls with number 6 and 4 balls with a number 4. What will be the average of the numbers of the balls taken out of the bag | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in less than 16s?
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[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:
| | 0.6 | 0.05 | 0.1 | | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 4? | |
[1] | A wheel has 14 sections, each a number on it from 1 to 14. If you spin an odd number you win that amount of dollars, if you spin an even 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:
| | 0.1 | 0.15 | 0.05 | 0.05 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 1? | |
[1] | The weather forecast says that the chances of rain are 60%. Your chance of being outside today is 60%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are 1 or 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 4 or 5? | |
[1] |
| A bag has 3 balls with number 1 and 8 balls with a number 7. What will be the average of the numbers of the balls taken out of the bag | |
[1] | A bag has 4 balls with numbers from 4 to 7. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 8? | |
[1] |
Flip 2 coins.
What is the probability of getting a head and a tail? | |
[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 | 0.05 | 0.15 | | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and 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:
What is the probability of rolling a number that is smaller than or equal to 4? | |
[1] | You flip a coin and roll a 7 sided die.
What is the probability of getting a 5 and a head? | |
[1] |
| You shoot an arrow at a target. There is a 90% chance of scoring a 30 and a 10% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | Flip a coin 8 times.
Each time a Head comes up you win $3. How much money would you expect to make altogether? | |
[1] |
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 more than 1? | |
[2] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.6 | | purple | orange | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being orange? | |
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