The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 9 - Producing Data: Experiments - Chapter 9 Exercises - Page 248: 9.33a

Answer

This is an observational study, because the subjects choose where they live.

Work Step by Step

This is an observational study, because the subjects choose where they live.
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