In: Statistics and Probability
A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back pain. Prior to testing the patch, each of n = 4 patients rates the current level of back pain on a scale from 1 to 8. After wearing the patch for 90 minutes, a second pain rating is recorded. The data are as follows.
Before After
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G = 36 6 2
G2 = 784 6 2
ΣX2 = 192 4 4
8 4
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T = 24 T = 12
SS = 8 SS = 4
Perform a Repeated Measures ANOVA and then analyze the data with a repeated measures t-test. Use the .05 level of significance for both.
prior to testing the patch, each of n =4
The current level of back pain on a scale from 1 to 8
After wearing the patch for 90 minutes