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23-Ind-A5 Quality Planning, Control, and Assurance: December 2015

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Quality Philosophy, Cost of Quality, Quality Planning and Designed Experiments
  2. Question 2 SPC Concepts, Control-Chart Sensitizing Rules, and an Individuals/Moving-Range Chart
  3. Question 3 Process Capability, Natural Tolerance Limits, and Detection-Speed Chart Design
  4. Question 4 Reliability, Constant Failure Rate, and Normal Life-Data Analysis
  5. Question 5 Attributes Charts — p-Chart Design, Revision, and ARL-Based np-Chart Sizing
  6. Question 6 Acceptance Sampling — Concepts and a MIL-STD-105E Single Sampling Plan

Start with Question 1 →

National Exams, December 2015. Closed-book examination. Any five of the six questions constitute a complete paper; all six are answered in full below. Relevant statistical tables (cumulative standard normal, normal tolerance-limit factors, cumulative Poisson, MIL-STD-105E code letters and master sampling table) are reproduced/applied from the paper's own attached appendices.

Reference texts: Montgomery, Introduction to Statistical Quality Control (8th ed.) — Ch. 5–6 (variables control charts, including individuals/moving-range charts), Ch. 7 (attributes charts and average run length), Ch. 8 (process and measurement-system capability, natural tolerance limits), Ch. 13 (reliability and life testing), Ch. 15 (acceptance sampling by attributes, MIL-STD-105E and Dodge–Romig plans).