Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 1 - Introduction to Statistics - 1-4 Collecting Sample Data - Page 32: 6

Answer

Experiment.

Work Step by Step

The subjects got 20 mg doses of drug to check their reactions to it, therefore a treatment was assessed, therefore it is an experiment.
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