The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval Frequency 20-under 40 30 40-under 60 45 60-under 80 80 80-under 100 45 What is the relative frequency of the second class? 0.725 0.225
The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval Frequency 20-under 40 30 40-under 60 45 60-under 80 80 80-under 100 45 What is the relative frequency of the second class? 0.725 0.225
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4AGP
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Question
The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.
|
Class Interval
|
Frequency
|
|---|---|
|
20-under 40
|
30
|
|
40-under 60
|
45
|
|
60-under 80
|
80
|
|
80-under 100
|
45
|
What is the relative frequency of the second class?
0.725
0.225
0.455
0.900
0.750
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