Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 1 - Introduction to Statistics - 1-4 Collecting Sample Data - Beyond the Basics - Page 34: 33

Answer

A completely randomized design is the most appropriate.

Work Step by Step

It would be really difficult to take all conditions into consideraion and it would probably not be necessary anyway, therefore there is not reason why to do any matching or blocking, therefore a completely randomized design is the most appropriate.
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