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Wire electrical-discharge machining (WEDM) is a process used to manufacture conductive hard metal components. It uses...

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Wire electrical-discharge machining (WEDM) is a process used tomanufacture conductive hard metal components. It uses acontinuously moving wire that serves as an electrode. Coating onthe wire electrode allows for cooling of the wire electrode coreand provides an improved cutting performance. An article gave thefollowing sample observations on total coating layer thickness (inµm) of eight wire electrodes used for WEDM.

21 17 29 35 43 25 24 26

Calculate a 99% CI for the standard deviation of the coatinglayer thickness distribution.

( , )

Answer & Explanation Solved by verified expert
4.3 Ratings (737 Votes)
We have given here Sample standard deviation8212 Sample size 8 Degree of freedom n1 7 Level    See Answer
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