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


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
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.