The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? LOADING... Click the icon to view the table. Determine the null and alternative hypotheses. A. H0: Polygraph testing is accurate. H1: Polygraph testing is not accurate. B. H0: Polygraph testing is not accurate. H1: Polygraph testing is accurate. C. H0: Whether a subject lies is independent of the polygraph test indication. H1: Whether a subject lies is not independent of the polygraph test indication. Your answer is correct. D. H0: Whether a subject lies is not independent of the polygraph test indication. H1: Whether a subject lies is independent of the polygraph test indication. Determine the test statistic. χ2=nothing (Round to three decimal places as needed.) More Enter your answer in the answer box and then click Check Answer. 2 parts remaining Clear All Check Answer More Info Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Polygraph test indicated that the subject lied. 20 28 Polygraph test indicated that the subject did not lie. 17 9

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies?

Click the icon to view the table.

Determine the null and alternative hypotheses.

H0:

Polygraph testing is accurate.

H1:

Polygraph testing is not accurate.

H0:

Polygraph testing is not accurate.

H1:

Polygraph testing is accurate.

H0:

Whether a subject lies is independent of the polygraph test indication.

H1:

Whether a subject lies is not independent of the polygraph test indication.

Your answer is correct.

H0:

Whether a subject lies is not independent of the polygraph test indication.

H1:

Whether a subject lies is independent of the polygraph test indication.

Determine the test statistic.

χ2=nothing

(Round to three decimal places as needed.)

Enter your answer in the answer box and then click Check Answer.

parts remaining

Clear All

Check Answer

More Info

	Did the Subject Actually Lie?
	No (Did Not Lie)	Yes (Lied)
Polygraph test indicated that the subject lied.	20		28
Polygraph test indicated that the subject did not lie.	17		9

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