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 - 1-2 Statistical and Critical Thinking - Page 15: 36

Answer

It is impossible for the dental rinse to “reduce plaque on teeth by over 300%.”

Work Step by Step

100% alone would clean all of the plaque on teeth. Therefore anything over 100% is physically impossible and this statement is claiming it can reduce it more than 300%.
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