Unformatted text preview: 8 Conditional
Probability Example 11 (cont’d) Notes Answer the following:
1 What is the probability a person in the study
preferred plain bottled water? 2 What is the probability a person in the study
preferred a sports drink? Conditional
Probability 3 What are the conditional probabilities P(M S ) and
P(W S )? 4 What are the joint probabilities P(M ∩ S ) and
P(W ∩ S )? 5 Given a consumer is a man, what is the probability
he will prefer a sports drink? General
Multiplication Rule 3.9 Conditional
Probability Example 11
Solution.
280
400
120
400 1 P( B ) = 2 P( S ) = 3 P( M  S ) =
40
400
120
400 4 5 = = 0.7
Conditional
Proba...
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 Spring '08
 MARTIN
 Conditional Probability, Probability

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