Question #2 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? View the table Dialog content starts   Did the Subject Actually​ Lie?     No​ (Did Not​ Lie) Yes​ (Lied)   Polygraph test indicated that the subject lied. 20 48     Polygraph test indicated that the subject did not lie. 23 11       Determine the test statistic.   χ2= ___________ ​(Round to three decimal places as​ needed.)   Determine the​ P-value of the test statistic.   ​P-value= ____________ ​(Round to four decimal places as​ nee

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Question #2

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?

View the table

Dialog content starts

 
Did the Subject Actually​ Lie?
 
 
No​ (Did Not​ Lie)
Yes​ (Lied)
 
Polygraph test indicated that the subject lied.
20
48
 
 
Polygraph test indicated that the subject did not lie.
23
11
   
 
Determine the test statistic.
 
χ2= ___________
​(Round to three decimal places as​ needed.)
 
Determine the​ P-value of the test statistic.
 
​P-value= ____________
​(Round to four decimal places as​ needed.)
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