Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 1 - Review - Test - Page 61: 6

Answer

Designed experiment. Response variable is battery life.

Work Step by Step

This is a designed experiment as all the factors except response variable (battery life) were controlled.
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