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