6) A forensic psychologist studying the accuracy of a new type of polygraph (lie detector) test instructed a participant ahead of time to lie about some of the questions asked by the polygraph operator. On average, the current polygraph test is 75% accurate, with a standard deviation of 6.5%. With the new machine, the operator correctly identified 83.5% of the false responses. Using the .05 level of significance, is the accuracy of the new polygraph different from the current one?

6) A forensic psychologist studying the accuracy of a new type of polygraph (lie detector) test instructed a participant ahead of time to lie about some of the questions asked by the polygraph operator. On average, the current polygraph test is 75% accurate, with a standard deviation of 6.5%. With the new machine, the operator correctly identified 83.5% of the false responses. Using the .05 level of significance, is the accuracy of the new polygraph different from the Current one? o Restate the question as a research hypothesis and a null hypothesis about the populations. 9 Determine the characteristics of the comparison distribution. 9 Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected. 0 Determine your sample's score on the comparison distribution. 6 Decide whether to reject the null hypothesis. b. Sketch the distributions involved