Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 1 - Review - Review Exercises - Page 59: 20

Answer

Observational study.

Work Step by Step

The parent group (the researcher) did not influence the production of the examined movies. That is, no attempt was made to influence the value of either the response or explanatory variables.
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