00:01
For this problem, we are told that the international journal of clinical and experimental hypnosis, investigated using virtual reality hypnosis, vrh, to reduce the pain of trauma patients.
00:12
Patients reported their pain intensity on the graphic rating scale, grs, both prior to and one hour after a vrh session.
00:20
The researchers reported that hypnosis reduced the pain intensity of trauma patients by an average of mu equals 10 points on the grs.
00:28
We are told to suppose we want to test whether trauma patients who receive normal analgesic care, i .e.
00:35
Medication but no hypnosis, will have a smaller reduction in average pain intensity than the vrh patients.
00:43
In part a, we have to, or we are asked to set up h -0 and h -a for the test.
00:50
So our null hypothesis will be that patients, who receive normal analgesic care have an equal to or greater reduction in average pain intensity.
01:04
So the null hypothesis then is that our, i'll say it's mu for a.
01:12
So mu sub a, so average result for analgesics is greater than or equal to 10...