# Two formulations of a certain coating, designed to inhibit

## Problem 5E Chapter 6.8

Statistics for Engineers and Scientists | 4th Edition

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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?

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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,...

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