Statistics question hypothesis test help

Posted on 2014-04-01 13:00:00 in Statistics by ASHLEY

n the paper "An Analysis of Factors that contribute to the efficacy of hypnotic analgesia" D Price examined the effects of hypnosis on pain. They measured response to pain using a visual analogue scale (VAS), in centimetres, where higher VAS indicates greater pain. VAS sensory ratings were made before and after hypnosis on each of 16 subjects. A hypothesis test is to be performed to decide whether, on average, hypnosis reduces pain.



a) identify the variable

b) identify the 2 populations

c) identify the pairs

d) identify the paired-difference variable

e) determine the alternative hypothesis



I think for a) the variable is the response of pain and

for b) 2 populations would be reduced pain or increased pain

and for e) Ha: sample mean 1 > sample mean 2

but im not too sure please help !!

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