Refer to the sample data for polygraph tests shown below. If one of the test sub

Question

Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly selected, what is the probability that the subject is not lying? Is the result close to the probability of 0.4620.462 for a negative test result? Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Positive test results 1212 4545 Negative test results 3535 1414 The probability that a randomly selected polygraph test subject was not lying is nothing. (Type an integer or decimal rounded to three decimal places as needed.)

Explanation / Answer

Following table shows the row total and column total,

Out of 106 subjects. 49 test results ar negative so the probability that a randomly selected polygraph test subject was not lying is

P(negative test result) = 49 / 106 = 0.462

Yes it is close to 0.462.

No (Did not lie) Yes (Lie) Total Positive test results 12 45 57 Negative test results 35 14 49 Total 47 59 106

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.