1. Section 11.2 – Probability
Objective: Find the probability of an event through theoretical or experimental methods.

2. Essential Understanding
Probability of an impossible event __________
Probability of a certain event __________
Probability of an event
(Theoretical or Experimental)

3. Ex. 1 – A softball player got a hit in 20 of her last 50 times at bat
Ex. 1 – A softball player got a hit in 20 of her last 50 times at bat. What is the experimental probability that she will get a hit in her next at bat?

4. Essential Understanding
Sample Space
The set of all possible outcomes.
Equally Likely
Each outcome has the same chance of occurring.

5. Ex. 2a – What is the theoretical probability of rolling a 5 on a standard number cube?

6. Ex. 2b – What is the theoretical probability of rolling a sum 5 on one roll of 2 standard number cubes?

8. Ex. 3 – Using Combinatorics to find probability
What is the theoretical probability of being dealt exactly two 7’s in a 5-card hand from a standard 52 card deck?

9. Ex. 3 – Geometric Probability
A batter’s strike zone depends on the height and stance of the batter. What is the geometric probability that a baseball thrown at random within the strike zone is a high- inside strike (one of the hardest to hit)?

10. HMW
p , 20, 23, 24, 37, 38, 39, 42, 34, 35