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(ii) Of the possible routes that the three can travel, which is the least probable? (iii) Given that three of them catch bus D, what is the probability that they caught bus C for the first stage of the journey? What is the probability that on their journey into town the three will catch bus B or bus D but not both? (iv)

(ii) Of the possible routes that the three can travel, which is the least probable? (iii) Given that three of them catch bus D, what is the probability that they caught bus C for the first stage of the journey? What is the probability that on their journey into town the three will catch bus B or bus D but not both? (iv)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Kym, Chris and Lee want to travel together into the bus station in town. Three bus routes pass along their road and, whatever the time of day, they will catch the first bus that comes along. At any given time, the probability that bus A comes first is 0.6, the probability that bus B comes first is 0.2 and the probability that bus C comes first is 0.2. All three buses terminate at the same bus station halfway into town. If Kym, Chris and Lee catch bus A they will always catch bus D for the remaining journey to town. If they catch bus B, the probability that bus D will be first is 0.4 and the probability that bus E will be first is 0.6. If they catch bus C, the probability that bus D comes first is 0.3, the probability that bus E comes first is 0.2 and the probability that bus F comes first is 0.5. (ii) Of the possible routes that the three can travel, which is the least probable? Given that three of them catch bus D, what is the probability that they caught bus C for the first stage of the journey? (iii) What is the probability that on their journey into town the three will catch bus B or bus D but not both? (iv)
Transcribed Image Text:Kym, Chris and Lee want to travel together into the bus station in town. Three bus routes pass along their road and, whatever the time of day, they will catch the first bus that comes along. At any given time, the probability that bus A comes first is 0.6, the probability that bus B comes first is 0.2 and the probability that bus C comes first is 0.2. All three buses terminate at the same bus station halfway into town. If Kym, Chris and Lee catch bus A they will always catch bus D for the remaining journey to town. If they catch bus B, the probability that bus D will be first is 0.4 and the probability that bus E will be first is 0.6. If they catch bus C, the probability that bus D comes first is 0.3, the probability that bus E comes first is 0.2 and the probability that bus F comes first is 0.5. (ii) Of the possible routes that the three can travel, which is the least probable? Given that three of them catch bus D, what is the probability that they caught bus C for the first stage of the journey? (iii) What is the probability that on their journey into town the three will catch bus B or bus D but not both? (iv)
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