Final answer:
To find the probability of selecting a subject with a positive polygraph test result, given that the subject did not lie, we need to use conditional probability.
Step-by-step explanation:
To find the probability of selecting a subject with a positive polygraph test result, given that the subject did not lie, we need to use conditional probability. Let's denote the event of selecting a subject with a positive polygraph test result as A, and the event of the subject not lying as B. We want to find P(A|B), which represents the probability of A given B. Using the formula for conditional probability:
P(A|B) = P(A and B) / P(B)
From the given information, we don't have the values for P(A and B) or P(B), so we cannot calculate the exact probability.