Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | blue | orange | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a blue sedan? | |
[2] | There are 100 balls in a bag. This is is the probability distribution of their color:
How many purple 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:
| | 0.1 | 0.2 | 0.25 | | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 1 or 4? | |
[1] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.2 | 0.5 | | green | red | blue | | Color |
How many green balls were in the bag? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 15s?
| |
[2] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 3 or a 4 and a head or a tail? | |
[1] |
Flip 1 coin.
What is the probability of getting a head? | |
[1] | There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.5 | 0.1 | | blue | purple | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it being blue or purple? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 17s?
| |
[2] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 5? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.7 | 0.3 | | blue | orange | | Color |
Probability of Type
| | 0.5 | 0.5 | | sedan | wagon | | Type |
What is the probability of a car being a orange wagon? | |
[2] | Roll 78 6-sided dice.
How many times would you expect to get more than 1? | |
[1] |
Flip a coin 18 times.
Each time a head comes up you win $4 and with each tail you lose $3. It costs $28 to play (paid once). How much money would you expect to make altogether? | |
[1] | Roll 12 6-sided dice.
How many times would you expect to get anything except 1? | |
[1] |
A wheel has 10 sections, each has a reward in dollars, from $1 through to $10.
What prize do we expect to get if we spin the wheel? | |
[1] |