The Basic Practice of Statistics
The Basic Practice of Statistics
7th Edition
ISBN: 9781464142536
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
Question
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Chapter 9, Problem 9.33E

(a)

To determine

To explain: The reason, which support that the study is observational study.

(b)

To determine

The variable that might differ between the subjects in the study living within 100 meters of a highway and those who were further away and explain the confounding variables.

(c)

To determine

To explain: The reason whether the study could be conducted as a randomized comparative experiment, and describe the difficulties.

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