Effectiveness of Hypnotism in Reducing Back Pain A study was conducted to investigate the effectiveness of hypnotism in reducing back pain. The values are before and after hypnosis and are measurements given on a pain scale. [Journal of Abnormal Psychology, Vol 96, No. 1, Price & Barber] [3 decimal places] Subject A B C D E F G H Before 6.6 6.5 9.0 10.3 11.3 8.1 6.3 11.6 After 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2.0 Use = 0.05 to test the claim that the mean sensory measurements are lower after hypnotism. a) Hypothesis Statements Ho: ___________ Ha: _______________ b) Which of these statements is the claim? __________ c) Sketch the curve and identify the rejection zone(s), critical value(s) and std test statistic. d) Critical Value(s) = ________ [label on the drawing] e) Standardized Test Statistic = _________ [label on the drawing] h) State your conclusion in terms of the original claim: _____________________________________________________________________________________ i) Does hypnosis appear to be effective for reducing pain? _________