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Dependent Events- Dependent Events- the outcome of one of the events affects the outcomes of another event. P(A & B)=P(A) P(B following A) Example Example: P (queen and 3)= or 0.6%
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9-79-7 Independent and Independent and Dependent EventsDependent Events (pg. 398-401)
Indicator: D7
• Compound event-Compound event- 2 (or more) simple events
• Independent events –Independent events – The outcome of the first event does not effect the outcome of the next event. P(A&B)= P(A)•P(B)
Example:Example: P (rolling “5” and tails)=
21
61
121
Dependent Events-Dependent Events- the outcome of one of the events affects the outcomes of another event. P(A & B)=P(A)• P(B following A)ExampleExample:P (queen and 3)=
or 0.6%
514
524
265216
6634
You TryYou Try
1) Tossing 4 coins and getting heads on all four?
2) There are 10 country CD’s and 15 rock CD’s. What is the probability of drawing a rock then a country CD?
• Mutually Exclusive eventsMutually Exclusive events: Can not happen at the same time
P(A oror B) = P(A) + P(B)
P(2 or 3 on a dice)= 61
61
62
31
or
Homework
• Period 3--> 9- 7 page 400-401 #17-19 & 22-32 all