A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Results are shown below (the average values are before and after hypnosis, the measurements are in cm on a pain scale).
Before After
x 8.9 5.3
s 0.8 1.2
n 10 10
Test the claim that the sensory measurements are lower after hypnotism. Use 95% level of confidence. Does hypnotism appear effective in reducing pain? (Assume σ1 ≠ σ2)
Comments
Leave a comment