On any given work day, Lillian notices that as she's driving to school, she is first stopped by a red light 80% of the time. Second, she also notices that she is stopped by a train 60% of the time. What is the probability that she was stopped by both a red light and train given she was stopped by a red light? What does your answer say about these two events? (Hint: If you are not sure look at the probability of getting stopped by both!)

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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4. On any given work day, Lillian notices that as she's driving to school, she is first stopped by a red light
80% of the time. Second, she also notices that she is stopped by a train 60% of the time. What is the
probability that she was stopped by both a red light and train given she was stopped by a red light? What
does your answer say about these two events? (Hint: If you are not sure look at the probability of getting
stopped by both!)
Transcribed Image Text:4. On any given work day, Lillian notices that as she's driving to school, she is first stopped by a red light 80% of the time. Second, she also notices that she is stopped by a train 60% of the time. What is the probability that she was stopped by both a red light and train given she was stopped by a red light? What does your answer say about these two events? (Hint: If you are not sure look at the probability of getting stopped by both!)
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