Question: The table to the right includes results from polygraph experiments. In each case, it was known if the subject lied or not, so the table

The table to the right includes results from polygraph experiments. In each case, it was known if the subject lied or not, 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 truths and lies? What is the test statistic (round two decimal places), What is the P value?, What is the X²p-value?

No (did not lie) Yes (lied)

Subject lied 15 42

Subject did not lie 32 8

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