Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 4 - Section 4.2 - Assess Your Understanding - Applying the Concepts - Page 219: 29b

Answer

Observational study.

Work Step by Step

The women's behavior was not influenced by the researchers in order to affect the birthweights of their babies.
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