A. Compute the mean and variance for the sample of difference scores. B. Provide the Null and alternative hypotheses  C. Calculate SSD

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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  1. 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 = 8 patients rates the current level of back pain on a scale from 1 to 10. After wearing the patch for 90 minutes, a second pain rating is recorded. The data are as follows: Include in your responses:

A. Compute the mean and variance for the sample of difference scores.

B. Provide the Null and alternative hypotheses 

C. Calculate SSD

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