Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Chapter 22, Problem 30E
Does your doctor know? (part 4) In Exercises 24, 26, and 28, we’ve tested a hypothesis about whether the use of statistics in NEJM medical articles has changed over time. The table shows the test’s residuals.
| 1978–79 | 1989 | 2004–05 | |
| No Stats | 3.39 | –1.68 | –2.48 |
| Stats | –1.64 | 0.81 | 1.20 |
- a) Show how the residual for the 1989/No cell was calculated.
- b) What can you conclude from the patterns in the standardized residuals?
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Chapter 22 Solutions
Intro Stats
Ch. 22.3 - Why do we need the control group?Ch. 22.3 - Prob. 2JCCh. 22.3 - Prob. 3JCCh. 22.3 - Prob. 4JCCh. 22.3 - Prob. 5JCCh. 22.3 - Prob. 6JCCh. 22.4 - Prob. 7JCCh. 22.4 - Prob. 8JCCh. 22.4 - Prob. 9JCCh. 22 - Human births If there is no seasonal effect on...
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