A group of humans were timed running 100m. Here are the results:
What fraction of the humans run 100m in exactly 15s?
| |
[2] | The weather forecast says that the chances of rain are 50%. Your chance of being outside today is 80%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] |
A bag has 5 balls with numbers from 5 to 9. You take out 1 ball.
What is the probability of getting a ball with an odd number? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score exactly 5? | |
[2] |
Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[1] | We asked a group of boys how many Sandwiches they eat in a week. Here are the results:
What is the probability of the boys to eat less than 3 Sandwiches in a week? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | purple | orange | | Color |
Probability of Type
| | 0.8 | 0.2 | | sedan | wagon | | Type |
What is the probability of a car being a purple sedan? | |
[2] | Roll 96 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] |
A bag has 7 balls with numbers from 2 to 8. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 1? | |
[1] | A wheel has 8 sections, each a number on it from 1 to 8. 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] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.8 | 0.2 | | yellow | orange | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a yellow sedan? | |
[2] | A bag has 4 red balls, 10 blue balls and 7 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.3 | 0.2 | | orange | red | green | | Color |
If you choose a random ball from the bag, what is the probability of it being red or green? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 20, a 40% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than 4? | |
[1] |