Wire electrical-discharge machining (WEDM) is a
Chapter 7, Problem 45(choose chapter or problem)
Wire electrical-discharge machining (WEDM) is a processused to manufacture conductive hard metal components.It uses a continuously moving wire that serves asan electrode. Coating on the wire electrode allows forcooling of the wire electrode core and provides animproved cutting performance. The article HighPerformanceWire Electrodes for Wire ElectricalDischargeMachiningA Review (J. of Engr. Manuf.,2012: 17571773) gave the following sample observationson total coating layer thickness (in mm) of eightwire electrodes used for WEDM:21 16 29 35 42 24 24 25Calculate a 99% CI for the standard deviation of thecoating layer thickness distribution. Is this interval validwhatever the nature of the distribution? Explain.
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