Migraines some people claim they can get relief from migraine headache pain by drinking a large glass of ice water. researchers plan to enlist several people who suffer from migraines in a test. participants will be randomly assigned to a standard pain reliever or a placebo. when a participant experiences a migraine headache, he or she will take the pill. half of each group will also drink ice water. participants will then report the level of pain relief they experience. a) identify the factors and levels in this experiment. b) identify the treatments and the response variable. c) is there any blinding described in the study? d) no blocking is described in the study. what might be an appropriate variable on which to block? clearly explain why you think this variable would be appropriate.