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Let event Aequalssubject is telling the truth and event Bequalspolygraph test indicates that the subject is lying. Use your own words to translate the notation Upper P (B|A )into a verbal statement. Choose the correct option below. A. The probability that the polygraph indicates lying given that the subject is actually lying. B. The probability that the polygraph indicates truthfulness given that the subject is actually telling the truth. C. The probability that the polygraph indicates lying given that the subject is actually telling the truth. D. The probability that the polygraph indicates truthfulness given that the subject is actually lying.

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Answer:

C is the right answer

Step-by-step explanation:

In this case we have the events

A: The subject is telling the truth.

B: The the polygraph indicates that the subject is lying

Recall that P(B|A) is defined as the probability that the event B occurs given that the event has already occurred, and is equals to P(B∩A)/P(A).

So, with the events we have defined, P(B|A) indicates the probability that the polygraph indicates lying given that the subject is actually telling the truth.

The most suitable answer is thus, C

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