A research team is interested in the effectiveness of hypnos

A research team is interested in the effectiveness of hypnosis in reducing pain. The responses from 8 randomly selected patients before and after hypnosis are recorded in the table below (higher values indicate more pain). Construct a 90% confidence interval for the true mean difference in pain after hypnosis. Fill in the missing table cells for the pain level differences. If the hypnosis treatment is effective in reducing pain, we expect the differences (pre - post) to be The point estimate for the true average effect that hypnosis has on pain perception (i.e. x_d) is: The point estimate for the true standard deviation of the effect that hypnosis has on pain perception (i.e. s_d)is: The 90% critical value is: The 90% confidence interval for the true mean difference in pain level after hypnosis is: Based on your confidence interval in part (f), does hypnosis seem to have a significant effect on pain levels? Why or why not?

Solution