Answered: he fuel economy of two small cars is…

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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Problem 3 The fuel economy of two small cars is being studied by driving 15 of each in different conditions and recording the fuel consumed. The resulting fuel economies, in litres/100 km, are as follows; Car A: 5.0 5.4 5.2 4.7 6.1 5.6 5.1 5.1 4.8 5.6 5.3 4.3 5.8 5.2 4.8 Car B: 5.7 6.1 4.7 5.2 5.3 5.7 5.6 5.3 6.7 5.8 6.2 5.6 5.6 6.2 5.7 For each car, compute, by hand, a) the sample mean, b) the sample standard deviation, and c) the sample median of the fuel economy. d) Use MINITAB to produce parallel boxplots. e) Based on the results in a)-d), which car do you think performs better? Why? (Here, you will only be expected to give your best opinion. Later, we will investigate more formal approaches to answering this question.)

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