The Essentials of Statistics: A Tool for Social Research
4th Edition
ISBN: 9781305802698
Author: Joseph F. Healey
Publisher: Cengage Learning US
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Textbook Question
Chapter 2, Problem 2.10P
PA/CJ As part of an evaluation of the efficiency of your local police force, you have gathered the following data on police response tie to calls for assistance during two different years. (Response times were rounded off to whole minutes.) Convert both frequency distributions into percentages, and write a paragraph comparing the changes in response time between the two years.
| Response Time, 2000 | Frequency (f) |
| 21 minutes or more | 20 |
| 16-20 minutes | 90 |
| 11-15 minutes | 185 |
| 6-10 minutes | 370 |
| Less than 6 minutes | 210 |
| Total | 875 |
| Response Time, 2010 | Frequency (f) |
| 21 minutes or more | 45 |
| 16-20 minutes | 95 |
| 11-15 minutes | 155 |
| 6-10 minutes | 350 |
| Less than 6 minutes | 250 |
| Total | 895 |
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Question 2
The data below provides the battery life of thirty eight (38) motorcycle batteries.
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Chapter 2 Solutions
The Essentials of Statistics: A Tool for Social Research
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