Concept explainers
A system consists of four components connected as shown.
Assume A, B, C, and D function independently. If the probabilities that A, B, C, and D fail are 0.1, 0.2, 0.05, and 0.3, respectively, what is the
Find the probability that the system functions.
Answer to Problem 1SE
The probability that the system functions is 0.9997.
Explanation of Solution
Given info:
A, B, C, and D are functions independently. The probabilities that A, B, C, and D fail are 0.1, 0.2, 0.05, and 0.3, respectively.
Calculation:
Let A be the event that component A functions, let B be the event that component B functions, let C be the event that component C functions, and let D be the event that component D functions.
Therefore, the probability of A is,
The probability of B is,
The probability of C is,
The probability of D is,
From the given figure, it is observed that the system functions is,
Therefore,
The probability of
The probability of
Therefore,
Hence, the probability that the system functions is 0.9997.
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Chapter 2 Solutions
STATISTICS FOR ENGINEERS+SCI.-ACCESS
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