The table below displays results from experiments with polygraph instruments. Find the positive predictive value for the test. That is, find the probability that the subject lied, given
that the test yields a positive result.
Positive test results
Negative test results
Did the Subject Actually Lie? O
Yes (Lied)
No (Did Not Lie)
20
32
The probability is
(Round to three decimal places as needed.)
45
8