I. The smoke will not be detected by device CS200 given that it has detected by device WS500. II. The smoke will be undetected III. The smoke will be detected by at least two devices.

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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b. A smoker detector system uses two devices. CS200 and WS500. If the smoke is present, the probability
that it will be detected by device CS200 is 0.75; and by device WS500 is 0.84; and if the smoke is
detected by device CS200 the probability that it is detected by device WS500 is 0.92.
Find the probability that
I. The smoke will not be detected by device CS200 given that it has detected by device WS500.
II. The smoke will be undetected
III. The smoke will be detected by at least two devices.
Transcribed Image Text:b. A smoker detector system uses two devices. CS200 and WS500. If the smoke is present, the probability that it will be detected by device CS200 is 0.75; and by device WS500 is 0.84; and if the smoke is detected by device CS200 the probability that it is detected by device WS500 is 0.92. Find the probability that I. The smoke will not be detected by device CS200 given that it has detected by device WS500. II. The smoke will be undetected III. The smoke will be detected by at least two devices.
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