1. If ONE student was to be selected at random, find the following probabilities: The student is a boyThe student has green eyes The student is left-handed The student is a brown-eyed boy The student is a right-handed girl

2. Which “type” of student would be the most likely to be chosen? Which “type” of student would be the least likely to be chosen? Did you observe anything interesting from the data?

3. 15.1 Intro to Probability Objective: To calculate the probability of a SINGLE event.

4. Vocabulary Sample Space (S): The complete set of all possible outcomes. (ex. The class) Event (E): The subset of the sample space that we want. (ex. Blue-eyed students) Probability (P) = # of outcomes in the event # of outcomes in the sample space

5. Example 1 Sarah rolls a dice once… Find S {1, 2, 3, 4, 5, 6} Find P(2) 1/6 Find P(even #) 3/6 = 1/2 Find P(even # or odd #) 6/6 = 1

6. Example 2 Find the probability of each event, given that a standard deck has 52 cards. A)A red card is chosen B)A queen is chosen C)A 2 or a 3 is chosen D)A red ace is chosen 26/52 = 1/2 4/52 = 1/13 8/52 = 2/13 2/52 = 1/26