1. 7.1 Experiments, Sample Spaces, & Events
UNIT 7 - Probability
7.1 Experiments, Sample Spaces, & Events

2. An event is a subset of a sample space.
Terminology
An experiment is an activity with observable results (called outcomes).
A sample point is an outcome of an experiment. The sample space is the set of all possible sample points.
An event is a subset of a sample space.

3. Ex 1. Rolling a die
Sample Space:
Event A: rolling an even number
Event B: rolling an odd number
Event C: rolling a multiple of 3

4. A  B
B  C Cc
A  C

5. Events A and B are mutually exclusive if
A  B = .
Give an example of mutually exclusive events if choosing a student in ICM at random.
A and B are complementary events if
B = Ac.

6. Ex 2. An experiment consists of spinning the hand on the disk below two times. Find the sample space. P C W

7. Ex 4. An experiment consists of rolling 2 dice
Ex 4. An experiment consists of rolling 2 dice. Describe the sample space.

8. Non-discrete sample spaces
Ex 5. Mrs. Cholkar observes how long it takes students to take a test.
Describe sample space if they are given the entire class period with no extended time.
Describe the event that it takes a student between 30 and 45 minutes, inclusive.