A researcher would like to evaluate the effectiveness of a pain-relief patch designed for back pain....

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A researcher would like to evaluate the effectiveness of a pain-relief patch designed for back pain. Prior to testing the patch, each of n = 8 patients rates their 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: Before After 10 2 7 2 10 3 8 1 6 2 4 2 9 7 7 8 You can type out your work here or upload your work. a. Find the difference scores (D= X2 - X1) (3 points): b. Calculate MD for the difference scores (2 points): c. Calculate the SS and variance (s2) for the difference scores. Round to 3 decimal places as needed (5 points. 3 points for work, 2 points for correct values of SS and variance). A researcher would like to evaluate the effectiveness of a pain-relief patch designed for back pain. Prior to testing the patch, each of n = 8 patients rates their 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: Before After 10 2 7 2 10 3 8 1 6 2 4 2 9 7 7 8 You can type out your work here or upload your work. a. Find the difference scores (D= X2 - X1) (3 points): b. Calculate MD for the difference scores (2 points): c. Calculate the SS and variance (s2) for the difference scores. Round to 3 decimal places as needed (5 points. 3 points for work, 2 points for correct values of SS and variance).