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

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

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?

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

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

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

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?

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)?

HMW p. 685-687 19, 20, 23, 24, 37, 38, 39, 42, 34, 35