March 2024
Intermediate to advanced
610 pages
24h 12m
English
Content preview from Introduction to the New Statistics, 2nd Edition
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Answers to End-of-Chapter Exercises
CHAPTER 1. ASKING AND ANSWERING RESEARCH QUESTIONS
- Pain study:
- The point estimate is 34%, the interval estimate is the 95% CI and is the interval from 19% to 49%, and MoE is 34 − 19 = 15% or 49 − 34 = 15%.
- We are 95% confident the population decrease in pain rating is in [19, 49], and any value in that interval is plausible as the population average decrease, whereas any value outside it is relatively implausible. Interpretation: I suspect a 34% reduction is enough to be clinically valuable; perhaps any reduction in the range from 19% to 49% could be clinically useful.
- The CI seems very long, and I would like to have a more precise estimate of the benefit of relaxation. I’m concerned that there may be other ...
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