A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score less than 4? | |
[2] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 1 | | | red | green | | Color |
Probability of Type
| | 0.6 | 0.4 | | sedan | wagon | | Type |
What is the probability of a car being a green sedan? | |
[2] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score more than 4? | |
[2] | A group of people were timed running 100m. Here are the results:
What is the probability of the people to run 100m in more than 14s?
| |
[2] |
A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 4 | | 14 | 5 | | 15 | 1 | | 16 | 4 | | 17 | 3 |
What fraction of the people run 100m in more than 13s?
| |
[2] | Roll 60 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 1? | |
[2] | 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 60%.
What is the probability of getting wet today? | |
[1] |
A group of humans were timed running 100m. Here are the results:
humans
| | 5 | 2 | 1 | 6 | 2 | | 13 | 14 | 15 | 16 | 17 | | Time |
What is the probability of the humans to run 100m in more than 14s?
| |
[2] | The weather forecast says that the chances of rain are 90%. Your chance of being outside today is 50%. The chance of remembering your umbrella is 40%.
What is the probability of getting wet today? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.2 | 0.7 | | purple | orange | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or orange? | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 10, 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] |
A bag has 10 red balls and 3 blue balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |