What are the degrees of freedom (df) for the ttest for comparing the mean difference in EORTC

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What are the degrees of freedom (df) for the t‐test for comparing the mean difference in EORTC QLQ‐C30 physical function domain scores before and after exercise for the data in Table 7.15?

A. 6 B. 7 C. 8 D. 38 E. 39

Table 7.15

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Medical Statistics A Textbook For The Health Sciences

ISBN: 9781119423645

5th Edition

Authors: Stephen J. Walters, Michael J. Campbell, David Machin

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Question Posted: Mar 14, 2024 02:01 AM

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What are the degrees of freedom (df) for the ttest for comparing the mean difference in EORTC

Question:

EORTC QLQ-C30 physical function scale score Subject (i) Before After 1 2 3 66.7 100.0 40.0 60.0 80.0 100.0 45 4 80.0 100.0 5 53.3 86.7 6 80.0 90.3 7 53.3 60.0 8 20.0 46.7 Mean 61.7 78.0

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