Maurice Tutor

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About Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 3 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 07 Feb 2018 My Price 5.00

e-Handbook of Statistical Methods

An application of a p-chart is given in the NIST/SEMATECH e-Handbook of Statistical Methods at http://www.itl.nist.gov/div898/handbook/ pmc/section3/pmc332.htm. Specifically, chips on a wafer were investigated and a nonconforming unit was said to occur whenever there was a misregistration in terms of horizontal and/or vertical distances from the center. Thirty wafers were examined and there were 50 chips on each wafer, with the proportion of misregistrations over the 50 chips per wafer recorded for each wafer. The average of the proportions is .2313.

 

(a) Would it be necessary to use the Ryan–Schwertman control limits in Section 11.9.1.1, or should 3-sigma limits suffice? Explain.

(b) Compute both sets of limits and comment.

Answers

Maurice Tutor
(5)
Status NEW Posted 07 Feb 2018 11:02 PM My Price 5.00

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