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Two formulations of a certain coating, designed to inhibit

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 5E Chapter 6.8

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

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Problem 5E

Problem 5E

Two formulations of a certain coating, designed to inhibit corrosion, are being tested. For each of eight pipes, half the pipe is coated with formulation A and the other half is coated with formulation B. Each pipe is exposed to a salt environment for 500 hours. Afterward, the corrosion loss (in μm) is measured for each formulation on each pipe.

Pipe

A

B

1

197

204

2

161

182

3

144

140

4

162

178

5

185

183

6

154

163

7

136

156

8

130

143

Can you conclude that the mean amount of corrosion differs between the two formulations?

Step-by-Step Solution:
Step 1 of 3

BLY 121 Chapter 2 Notes August 23, 2016 Atomic Theory Socrates-Born in Ancient Greece ~500 BC All matter is made up of tiny invisible particles named “atoms” Matter has mass and occupies space (Composed of chemical elements) “type” of matter depends on atomic structure Atom: smallest unit of matter which retains the physical and chemical properties of an element. Consists of protons, neutrons, and electrons. Atomic Structure (Niels Bohr-Quantum Physics): Nucleus composed of protons and neutrons and surrounded by orbiting electrons.  Protons and neutrons have roughly the same mass (1 Dalton)  Electron’s weight is negligible.  Atomic number= # of protons  Atomic mass/weight= mass of protons and neutrons combined (i.e. Carbon’s atomic number is 6 and atomic

Step 2 of 3

Chapter 6.8, Problem 5E is Solved
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Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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Two formulations of a certain coating, designed to inhibit