Quality management systems

Question Description

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Note: You need to type all steps of calculations. Please use excel for calculation and avoid cut & paste from excel.

Q1–A product has three quality characteristics. The nominal values of these quality characteristics and their sample covariance matrix have been determined from the analysis of 30 preliminary samples of size n=10 as follows:. The sample means for each quality characteristic for 15 additional samples of size n=10 are show below. Is the process in statistical control? Please provide details.

Sample #	Xbar1	Xbar2	Xbar3
1	3.1	3.7	3
2	3.3	3.9	3.1
3	2.6	3	2.4
4	2.8	3	2.5
5	3	3.3	2.8
6	4	4.6	3.5
7	3.8	4.2	3
8	3	3.3	2.7
9	2.4	3	2.2
10	2	2.6	1.8
11	3.2	3.9	3
12	3.7	4	3
13	4.1	4.7	3.2
14	3.8	4	2.9
15	3.2	3.6	2.8

Answer:

Q2 – The below table presents chemical process data. Using Engineering Process Control Chart in Module14 (Course Note), find the reset points and Construct the Control Charts.

Answer:

Q3 (Benchmarking Question)–Perform benchmarking for Company X and provide remedy options (Methodology, Tools, Techniques) to improve Company X performance?

Key Process Area	Industry Average	Company X	Difference	Remedy options
Employee development	450	260
Materials	31,000	30,000
Warehousing	975	3,000
Material control	180	3,500
Materials preparation	85	550
Production control	725	3,800
Assembly	10,000	11,100
Integration & test	3,060	2,050
Incoming inspection	75	275
In-process inspection	200	500
Supplier auditing	1,250	150
Internal auditing	2,800	200

Answer:

Q4 (Process Capability Question)–A process is in statistical control with x(double bar) = 39.7 and R(bar) = 2.5. The control chart uses a sample size of n = 2. Specifications are at 40 +/- 5. The quality characteristic is normally distributed. Estimate the potential capability of the process and explain your conclusion.

Answer:

Q5 –Explain the shortcomings of control ellipse in Multivariate Monitoring Chart?

Answer:

Please answer all questions Upload the complete answers book in Word Doc.

Note: You need to type all steps of calculations. Please use excel for calculation and avoid cut & paste from excel.

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