In a manufacturing industry the plate thickness is one of the important CTQ factor. This industry wants to establish Xbar and R control chartson the production process. The resulting data from 20 sets of plate thickness samples with a subgroup size of 4 that were measured are:2020Xi = 20.883Ri = 3.733%3Di=1i=1a. Find the control limits that should be used on the Xbar and R control charts.b. Assume that the 20 preliminay samples plot in control on both charts. Estimate the process mean and standard deviation.

Given,∑i=120xi¯=20.883∑i=120Ri¯=3.733 To find: a) Control limits b) Mean and Standard…

Answered: In a manufacturing industry the plate…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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