Intro Stats, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134210285
Author: Richard D. De Veaux, Paul Velleman, David E. Bock
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 78E
Thirsty? Researchers randomly assigned participants either a tall, thin “highball” glass or a short, wide “tumbler,” each of which held 355 ml. Participants were asked to pour a shot (1.5 oz = 44.3 ml) into their glass. Did the shape of the glass make a difference in how much liquid they poured? Here are the summaries:
| Highball | Tumbler | ||
| n | 99 | n | 99 |
| ӯ | 42.2 ml | ӯ | 60.9 ml |
| s | 16.2 ml | s | 17.9 ml |
Test an appropriate hypothesis and state your conclusions. For assumptions and conditions that you cannot test, you may assume that they are sufficiently satisfied to proceed.
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Reconsider the patient satisfaction data in Table 1. Fit a multiple regression model using both patient age and
severity as the regressors.
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The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at
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(a) Test the hypothesis that the mean voltage equals 12 V against a two-sided alternative using a = 0.05.
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(d) Construct a 95% two-sided confidence interval on σ.
(e) Construct a 95% upper confidence interval on σ.
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Chapter 17 Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
Ch. 17.2 - A public broadcasting station plans to launch a...Ch. 17.2 - Prob. 2JCCh. 17.3 - Prob. 3JCCh. 17.3 - Prob. 4JCCh. 17.4 - Prob. 5JCCh. 17.4 - Prob. 6JCCh. 17.4 - Prob. 7JCCh. 17.4 - Prob. 8JCCh. 17.5 - Prob. 9JCCh. 17.5 - Recall the experiment comparing patients 4 weeks...
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