MM305_Unit8_Project to be done

# MM305_Unit8_Project to be done - MM305 Quantitative...

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MM305 Quantitative Analysis for Managers Unit 8 Project Please download this document to your computer and save it using the naming convention specified in the course syllabus. After completing and saving the project problems, submit your project in the Drop Box for Unit 8. 1. Precision Manufacturing has a government contract to produce stainless steel rods for use in military aircraft. Each rod is required to be 20 millimeters in diameter. Each hour, random samples of size n = 4 rods are measured to check process control. Five hours of observations yielded the following: Diameter Time Rod 1 Rod 2 Rod 3 Rod 4 9 A.M. 19.8 20.4 19.9 20.3 10 A.M. 20.1 20.2 19.9 19.8 11 A.M. 19.9 20.5 20.3 20.1 Noon 19.7 19.8 20.3 20.2 1 P.M. 19.7 20.1 19.9 19.9 Using these data and the table below, construct limits for xbar- and R-charts. Is the process in control? Control Chart Limits Factors Sample Size n Mean Factor A 2 Upper Range D 4 Lower Range D 3 2 1.880 3.628 0 3 1.023 2.574 0 4 0.729 2.282 0 5 0.577 2.114

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MM305_Unit8_Project to be done - MM305 Quantitative...

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