Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 1 - Section 1.6 - Design of Experiments - Exercises - Page 22: 1.31

Answer

a. designed experiment b. It is not a double blinded experiment.

Work Step by Step

a. The participants do not join the experiment voluntarily and they do not know which groups they belong to. b. The researcher is accessible throughout the experiment.
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