The table below includes results from polygraph lie detector

Last updated: 11/27/2023

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 OA Ho Polygraph testing is accurate H Polygraph testing is not accurate OB Ho Polygraph testing is not accurate H Polygraph testing is accurate C Ho Whether a subject lies is independent of the polygraph test indication H Whether a subject lies is not independent of the polygraph test indication O D Ho Whether a subject lies is not independent of the polygraph test indication H Whether a subject lies is independent of the polygraph test indication Determine the test statistic x Round to three decimal places as needed More Info Polygraph test indicated that Did the Subject Actually Lie No Did Not Lie Yes Lied 35 X