1. Geometric Distribution
Section 8.2
Geometric Distribution

2. Roll a die until you get a 3
Let X=the number of rolls it takes to get the 3 P(X=1) P(X=2) P(X=3) P(X=4) P(X=n)

3. In general…
P(X=n)=
What are the possible values of x?

4. Geometric Setting Conditions
Each observation falls into 2 categories: success or failure.
Probability of success is the same for each observation.
Observations are independent.
Number of trials is determined by how many times it takes to obtain 1st success.

5. Example: Randomly choose a number between 1-10 until you get a 7.
Probability Distribution:
Probability Histogram:

6. Homework
Pg. 543 #41,43,44