Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 4 - Probability and Counting Rules - 4-1 Sample Spaces and Probability - Exercises 4-1 - Page 199: 24

Answer

a. $\frac{19}{50}$ b. $\frac{31}{50}$ c. $\frac{37}{50}$

Work Step by Step

a. 60 or 70 miles per hour There are 19 states whose speed limit is 60 or 70 miles per hour, the probability here is $p=\frac{19}{50}$ b. Greater than 65 miles per hour There are 31 states whose speed limit is greater than 65 miles per hour, so the probability is $p=\frac{31}{50}$ c. 70 miles per hour or less There are 37 states whose speed limit is 70 miles per hour or less, the probability of choosing such a state is $p=\frac{37}{50}$
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.