3. Data on the amount of wear measured with two different materials A and B for shoes is shown: Shoes A A Foot B B Foot d (B-A) 1 13.2 L 14.0 R 0.8 2 8.2 L 8.8 R 0.6 3 10.9 R 11.2 L 0.3 4 14.3 L 14.2 R -0.1 5 10.7 R 11.8 L 1.1 6 6.6 L 6.4 R -0.2 7 9.5 L 9.8 R 0.3 8 10.8 L 11.3 R 0.5 9 8.8 R 9.3 L 0.5 10 13.3 L 13.6 R 0.3 Does the type of material matter for the wear on the shoes? What is the confidence limit that there is at least some difference? What is that difference? Does the choice of foot that the material was used on matter? Is this "good" data?

3. Data on the amount of wear measured with two different materials A and B for shoes is shown: Shoes A A Foot B B Foot d (B-A) 1 13.2 L 14.0 R 0.8 2 8.2 L 8.8 R 0.6 3 10.9 R 11.2 L 0.3 4 14.3 L 14.2 R -0.1 5 10.7 R 11.8 L 1.1 6 6.6 L 6.4 R -0.2 7 9.5 L 9.8 R 0.3 8 10.8 L 11.3 R 0.5 9 8.8 R 9.3 L 0.5 10 13.3 L 13.6 R 0.3 Does the type of material matter for the wear on the shoes? What is the confidence limit that there is at least some difference? What is that difference? Does the choice of foot that the material was used on matter? Is this "good" data?

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 28EQ

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