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An electronic assembly consists of two s...

An electronic assembly consists of two sub-systems, say, A and B. From previous -testing procedures, the following probabilities are assumed to be known.
P(A fails)= 0.2
(B fails alone) = 0.15
P(A and B fail)= 0.15 Evaluate the following probabilities
i. P(A fails|B has failed)
ii. P(A fails alone)

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The correct Answer is:
i. `(1)/(2)`, ii. 0.05
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