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Textbook Name Bookstore Amazon The Business Writer's Handbook 44.00 34.16 Tennis 30.00 28.13 Environmental Geology 139.70 104.00 Statistical Methods for Forecasting 105.00 90.41 Art and Creative Development for Young Children 99.70 95.35 Common Wealth 27.95 11.56 Genetics 160.00 116.34 Collin French Concise Dictionary 15.00 10.27 Special Education 122.00 90.30 Paper Fish Project Management 15.95 15.95 Foundation Actionscript 40.00 27.04 167.00 126.89 On Being Different 53.00 41.41 Intro to Management Science 185.35 166.79 Chinese Film in Focus 31.95 23.00 Reading Greek: Grammar and Exercises 35.00 31.49 Government in America: Brief Study Edition 92.40 74.30 Investments 189.35 164.50 New Approach to Ear Training 93.35 89.50

Textbook Name Bookstore Amazon The Business Writer's Handbook 44.00 34.16 Tennis 30.00 28.13 Environmental Geology 139.70 104.00 Statistical Methods for Forecasting 105.00 90.41 Art and Creative Development for Young Children 99.70 95.35 Common Wealth 27.95 11.56 Genetics 160.00 116.34 Collin French Concise Dictionary 15.00 10.27 Special Education 122.00 90.30 Paper Fish Project Management 15.95 15.95 Foundation Actionscript 40.00 27.04 167.00 126.89 On Being Different 53.00 41.41 Intro to Management Science 185.35 166.79 Chinese Film in Focus 31.95 23.00 Reading Greek: Grammar and Exercises 35.00 31.49 Government in America: Brief Study Edition 92.40 74.30 Investments 189.35 164.50 New Approach to Ear Training 93.35 89.50

MATLAB: An Introduction with Applications
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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Can students save money by comparison shopping for textbooks at Amazon.com? To investigate this possibility, a random sample of 19 textbooks used during the Spring 2009 semester at Miami University was selected. The prices for these textbooks at both a local bookstore and through Amazon.com were recorded. The prices for the textbooks are stored in “BookPrices” data in Chapter 10_HW_Data.xls.  

At the 0.01 level of significance, is there evidence of a difference between the mean price of textbooks at the local bookstore and Amazon.com? 

What assumption is necessary about the population distribution in order to perform this test? 

Textbook Name Bookstore Amazon The Business Writer's Handbook 44.00 34.16 Tennis 30.00 28.13 Environmental Geology 139.70 104.00 Statistical Methods for Forecasting 105.00 90.41 Art and Creative Development for Young Children 99.70 95.35 Common Wealth 27.95 11.56 Genetics 160.00 116.34 Collin French Concise Dictionary 15.00 10.27 Special Education 122.00 90.30 Paper Fish Project Management 15.95 15.95 Foundation Actionscript 40.00 27.04 167.00 126.89 On Being Different 53.00 41.41 Intro to Management Science 185.35 166.79 Chinese Film in Focus 31.95 23.00 Reading Greek: Grammar and Exercises 35.00 31.49 Government in America: Brief Study Edition 92.40 74.30 Investments 189.35 164.50 New Approach to Ear Training 93.35 89.50
Transcribed Image Text:Textbook Name Bookstore Amazon The Business Writer's Handbook 44.00 34.16 Tennis 30.00 28.13 Environmental Geology 139.70 104.00 Statistical Methods for Forecasting 105.00 90.41 Art and Creative Development for Young Children 99.70 95.35 Common Wealth 27.95 11.56 Genetics 160.00 116.34 Collin French Concise Dictionary 15.00 10.27 Special Education 122.00 90.30 Paper Fish Project Management 15.95 15.95 Foundation Actionscript 40.00 27.04 167.00 126.89 On Being Different 53.00 41.41 Intro to Management Science 185.35 166.79 Chinese Film in Focus 31.95 23.00 Reading Greek: Grammar and Exercises 35.00 31.49 Government in America: Brief Study Edition 92.40 74.30 Investments 189.35 164.50 New Approach to Ear Training 93.35 89.50
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