Wire electrical-discharge machining (WEDM) is a process used to manufacture conductive hard metal components. It uses a continuously movingwire that serves as an electrode. Coating on the wire electrode allows for cooling of the wire electrode core and provides an improved cuttingperformance. An article gave the following sample observations on total coating layer thickness (in µm) of eight wire electrodes used for WEDM.21 17 29 35 43 24 24 25Calculate a 99% CI for the standard deviation of the coating layer thickness distribution. (Round your answers to two decimal places.)Is this interval valid whatever the nature of the distribution? Explain.o Yes, there are enough data points for this interval to be valid.O No, validity of this interval requires that coating layer thickness be, at least approximately, normally distributed.

Answered: Wire electrical-discharge machining…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Wire electrical-discharge machining (WEDM) is a process used to manufacture conductive hard metal components. It uses a continuously moving wire that serves as an electrode. Coating on the wire electrode allows for cooling of the wire electrode core and provides an improved cutting performance. An article gave the following sample observations on total coating layer thickness (in µm) of eight wire electrodes used for WEDM. 22 17 29 35 42 24 25 25 Calculate a 99% CI for the standard deviation of the coating layer thickness distribution. (Round your answers to two decimal places.) ( ____ , ____ )
8:50 AA www-awn.aleks.com O DESCRIPTIVE STATISTICS Approximating the standard deviation of a data set. Reyesburg Corporation is contemplating using a new, more expensive glue in the construction of its laminated veneer lumber. Of importance to the company is the variability of the carrying load of the lumber. The company has tested 20 beams using the new glue, recording for each beam the pressure (in pounds per square foot) at which the beam breaks. The data collected are presented in the following histogram: Frequency 920 Carrying load (in pounds per square foot) 900 Based on this histogram, estimate the standard deviation of the sample of 20 carrying loads. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. (If necessary, consult a list of formulas.) Explanation Check Terms of UseI Privacy I Accessibility
Draw the graph and highlight the area of ± 2 standard deviations.
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