Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 1 - The Nature of Probability and Statistics - 1-4 Experimental Design - Exercises - Page 25: 37

Answer

The sample is suspect, which makes the claim suspect.

Work Step by Step

No information is given that identifies the sample size of dermatologists rating the product nor how those dermatologists were chosen.
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