A wheel has 11 sections, each a number on it from 1 to 11. 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] | | You shoot an arrow at a target. You will either score 20 (30% chance), 40 (10% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 6 red balls and 5 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] | A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in more than 13s?
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[2] |
We asked a group of girls how many Chocolates they eat in a week. Here are the results:
What fraction of the girls eat exactly 4 Chocolates in a week? | |
[2] | We asked a group of kids how many Burgers they eat in a day. Here are the results:
What is the probability of the kids to eat exactly 0 Burgers in a day? | |
[2] |
Roll 48 6-sided dice.
How many times would you expect to get more than 5? | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 30, a 20% 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] |
The weather forecast says that the chances of rain are 20%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 40%.
What is the probability of getting wet today? | |
[1] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 15s?
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[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 4 and a tail? | |
[1] | A bag has 4 balls with numbers from 5 to 8. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[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:
| | 0.35 | 0.1 | 0.15 | 0.15 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3? | |
[1] | There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.3 | 0.6 | | blue | pink | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being blue or yellow? | |
[1] |
A bag has 3 balls with number 4 and 2 balls with a number 8. You take out 1 ball.
What is the probability of getting the ball with the number 4? | |
[1] | Roll 114 6-sided dice.
How many times would you expect to get anything except 3? | |
[1] |
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