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Name: As the Hispanic population in the United States has grown,businesses h
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Description: As the Hispanic population in the United States has grown,businesses have tried to understand what Hispanics like. One study interviewed a random sample of customers leaving a bank. Customers were classified as Hispanic if they preferred to be interv

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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As the Hispanic population in the United States has grown,businesses have tried to understand what Hispanics like. One study interviewed a random sample of customers leaving a bank. Customers were classified as Hispanic if they preferred to be interviewed in Spanish or as Anglo if they preferred English. Each customer rated the importance of several aspects of bank service on a 10-point scale.³¹ Here are summary results for the importance of “reliability” (the accuracy of account records and so on):

Construct and interpret a 95% confidence interval for the difference between the mean ratings of the importance of reliability for Anglo and Hispanic bank customers.

POSSIBLE POINTS: 5.56
As the Hispanic population in the United States has grown,businesses have tried to understand what Hispanics like. One study interviewed a random sample
of customers leaving a bank. Customers were classified as Hispanic if they preferred to be interviewed in Spanish or as Anglo if they preferred English. Each
customer rated the importance of several aspects of bank service on a 10-point scale.31 Here are summary results for the importance of "reliability" (the
accuracy of account records and so on):
Group
Sx
Anglo
92
6.37
0.60
Hispanic
86
5.91
0.93
Construct and interpret a
confidence interval for the difference betwe
the mean ratings of the importance
reliability for Anglo and Hispanic bank
customers.
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