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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: Before After 2 8. 3 9. 4 8. 10 2 5. 9. 8. 7 7 Do the results indicate a significant difference? Use a two-tailed test with a = .05 The mean for the sample of difference score is and the variance is . The standard error is the df is . Our calculated t-value is . For this reason we the null hypothesis.

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: Before After 2 8. 3 9. 4 8. 10 2 5. 9. 8. 7 7 Do the results indicate a significant difference? Use a two-tailed test with a = .05 The mean for the sample of difference score is and the variance is . The standard error is the df is . Our calculated t-value is . For this reason we the null hypothesis.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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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: Before After 6 2 8. 4 8 1 10 2 3 9 7 Do the results indicate a significant difference? Use a two-tailed test with a = .05 The mean for the sample of difference score is and the variance is . The standard error is the df is Our calculated t-value is . For this reason we the null hypothesis.
Transcribed Image Text: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: Before After 6 2 8. 4 8 1 10 2 3 9 7 Do the results indicate a significant difference? Use a two-tailed test with a = .05 The mean for the sample of difference score is and the variance is . The standard error is the df is Our calculated t-value is . For this reason we the null hypothesis.
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