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 133: 7.7

Answer

The professor awarded A's to about .0668, or 6.68% of the students.

Work Step by Step

We use the table of Normal curve areas to find the proportion of the class that was awarded an A. First, go to column A to find the z score of 1.5. Then, use column C to find the proportion of students with a z score of 1.50 or higher (from z). The value from column C is .0668
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.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions