Question: Stress levels were recorded during a true answer and a false answer given by each of six people in a study of lie-detecting equipment, based on the idea that the stress involved in telling a lie can be measured. The results are shown in Table.
a. Was everyone's stress level higher during a false answer than during a true answer?
b. How many had more stress during a true answer? During a false answer?
c. Find the modified sample size.
d. Use the nonparametric sign test for the differences to tell whether there is a significant difference in stress level between true and false answers.
