Question

4. A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Randomly selected subjects are measured for their pain level based on a pain scale both before and after hypnosis. The resulting data is given in the table below. Assuming normality, test at the 5% significance level to determine if the hypnotism appears to be effective in reducing pain. (17 points) Pain Level Subject 1 2 3 4 5 6 7 8 9 10 11 12 Before 6.6 6.5 9.0 10.3 11.3 8.1 6.3 11.6 6.5 7.4 7.3 9.5 After 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2.0 6.5 7.1 5.0 5.0 Assumptions H. H Test Statistic Rejection Region Conclusion P-value Based on your conclusion, what type of error have you possibly subjected yourself to and explain the error in terms of this particular situation?

Answer 1

Samg oberveton are indipendt AMungtin eath ot paired C4) Two Sample obsexvhom ore olbserve dittereua oral po putetion ot dintributed o- Befee- After Ho: Mo 0 3.4473 Test txtie 2.9 9.6 o 18 2.6 3 2 16 o.3 2.3 4.S 32-1 2.67 12 খে - ) - (d) CI63.01- 2.6496 1 12 td- (S 2675-D 3 49 73 2.6496 Pejeutien Region Condusion Rejet tae w ypo ais a nalwe can Conum de thar hypnotam etteutve in df l O.00249 O.0u9 Even fhough T hypnet TYpeTexrey hre appeaxs uot obteutve Ctto) in we condnde that it isttetive