The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it
Posted: Wed May 11, 2022 3:42 pm
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?
No (did not lie)
Yes(lied)
Polygraph test indicated that the subject lied.
14
21
polygraph test indicated that the subject did not lie.
26.
9
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.)
Do the results suggest that polygraphs are effective in
distinguishing between truth and lies?
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?
No (did not lie)
Yes(lied)
Polygraph test indicated that the subject lied.
14
21
polygraph test indicated that the subject did not lie.
26.
9
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.)
Do the results suggest that polygraphs are effective in
distinguishing between truth and lies?