Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 3 - Section 3.2 - Assess Your Understanding - Applying the Concepts - Page 154: 29a

Answer

95% of people have an IQ score between 70 and 130 according to the Empirical Rule.

Work Step by Step

Using the Empirical rule, we have: x̅ - 2s = 100 - 2 (15) = 70 x̅ - 2s = 100 + 2 (15) = 130 Hence, 95% of people have an IQ score between 70 and 130 according to the Empirical Rule.
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