Probability and Statistics Example Problems
Imagine you have 3 red marbles and 4 blue marbles.
Answers:
* These are independent events, more on probability of dependent events later!
- What is the probability of choosing a red marble?
- What is the probability of choosing a red or blue marble?
- What is the probability of choosing a black king?
Answers:
- Your answer should be 3/7. How do you get the answer, well first you got to find out the total of marbles which is 7. Next you have to find out the total of red marbles. After (last step) you do a fraction which would be 3/7.
- Your answer should be 1, because 3/7 marbles are red, and 4/7 marbles are blue. So 7/7 are red or blue, that makes the probability 1.
- Your answer should be 0. There are marbles not cards, so the probability is 0/7 or 0.
* These are independent events, more on probability of dependent events later!