WARM UP
Solve 5! − 2!
120-2
=118
ANNOUNCEMENTS
 Quiz on Friday
 Homework and Warm ups due Friday
INDEPENDENT EVENTS
 2 events are independent if the occurrence of one
event does not affect the probability of the other
event
DEPENDENT EVENTS
 2 events are dependent if the occurrence of one
event affects the probability of the other event.
IDENTIFYING INDEPENDENT AND DEPENDENT EVENTS
PROBABILITY OF INDEPENDENT EVENTS
If A and B are independent events, then
EXAMPLE
MUTUALLY EXCLUSIVE EVENTS
 Events that cannot happen at the same time
PROBABILITY OF MUTUALLY EXCLUSIVE EVENTS
If A and B are mutually exclusive
events, then
EXAMPLE
HOMEWORK
Pg. 631 #1-11