The Basic Practice of Statistics
The Basic Practice of Statistics
8th Edition
ISBN: 9781319042578
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
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Chapter 11, Problem 11.19SE
To determine

To explain: Whether or not the study is an observational study or an experiment.

To identify: The explanatory and response variables.

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