NivaarExam PrepOfficial exam papers ↗

23-Ind-A5 Quality Planning, Control, and Assurance: May 2013

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

  1. Question 1 Taguchi Philosophy, Quality Costs, and Six Sigma
  2. Question 2 SPC Sampling, EPC vs. SPC, and Why EWMA/CUSUM Beat the Shewhart Chart
  3. Question 3 Variation, Control/Specification/Tolerance Limits, and an Individuals Chart for Tensile Strength
  4. Question 4 Attributes Charts, a $u$-Chart for Disk-Drive Nonconformities, and Minimum Sample Size
  5. Question 5 Product/Process Design Stages, Taguchi Methods, and a Fractional Factorial Experiment
  6. Question 6 Acceptance Sampling, MIL-STD-105E Features, and a Single Sampling Plan

Start with Question 1 →

National Exams — May 2013 — 98-Ind-A5 Quality Planning, Control and Assurance. Three-hour, closed-book exam; Casio or Sharp approved calculators only; one double-sided 8.5×11 aid sheet permitted; relevant statistical tables attached. Format: six questions, each worth 20 marks; any five constitute a complete paper, and only the first five appearing in the answer book are marked, so candidates effectively choose 5 of 6. All six are solved below for completeness.

Reference texts: Montgomery, Introduction to Statistical Quality Control (8th ed.) — control charts, process capability, acceptance sampling and design of experiments for quality improvement (the primary text for every part of this paper); Hillier & Lieberman, Introduction to Operations Research (11th ed.) — probability/decision background; ISO 9001:2015 — quality management systems and certification; MIL-STD-105E — sampling procedures and tables for inspection by attributes.