Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation.
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation.
|
Bank A (single line):
|
6.5
|
6.6
|
6.7
|
6.9
|
7.1
|
7.3
|
7.4
|
7.6
|
7.7
|
7.7
|
|
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Bank B (individual lines):
|
4.0
|
5.3
|
5.9
|
6.3
|
6.7
|
7.7
|
7.7
|
8.5
|
9.4
|
9.7
|
The coefficient of variation for the waiting times at Bank A is
enter your response here%.
(Round to one decimal place as needed.)
The coefficient of variation for the waiting times at the Bank B is
enter your response here%.
(Round to one decimal place as needed.)
Is there a difference in variation between the two data sets?
The waiting times at Bank A have considerably less variation than the waiting times at Bank B.
There is no significant difference in the variations.
The waiting times at Bank B have considerably less variation than the waiting times at Bank A.
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