Basic Statistics: Tales of Distributions 10th Edition

Published by Cengage Learning
ISBN 10: 0-49580-891-1
ISBN 13: 978-0-49580-891-6

Chapter 7 - Theoretical Distributions Including the Normal Distribution - Problems - Page 142: 7.22

Answer

We wold expect 158 students to score between 20 and 30 on the test.

Work Step by Step

We are to determine the number of students expected to score between 20 and 30 on the test. Here is the calculation: 19.71% of 800 = (.1971)(800) = 157.68 = 158
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