The table below displays results from the experiments with polygraph instruments

Question

The table below displays results from the 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   No Did not lie Yes (Lied)
                                      16                   41

Negative Test Result       33                 10

Homework: Assignment 6 Score: 0 of 3 pts X4.3.19 40f414 complete) Hw Score: 72.73%, 8 of 11pts Quest on ,ep * re latle tbeicw depjays resuts trom esperiments with polsgrach imcrumerrs. Fnd the postive predective value tor the lest. That is 1nd the protatisaly thsit she sutect sed gven that the sest yeits a pesnve Did the Subject Actually Lie? No (Did Not Lay Yes (Liea) Posnive test results Negatre test resurs The potobah is All garts snowing

Explanation / Answer

Positive test results = n(s) = 57

P(lied give positive test results) = 41 / 57

= 0.719

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