A company produces 8-pound bags of rice. As shown below, it gathered 5 samples with 6 bags

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A company produces 8-pound bags of rice. As shown below, it gathered 5 samples with 6 bags in each sample for quality control purposes. The weights of each of the bags are listed below.


Bags in each sample 

4 2 8.34 3 Sample 6 7.68 8.02 8.08 7.94 7.98 8.33 7.89 8.44 8.22 8.51 8.41 8 7.9 8.28 7.89 3 4 7.77 7.91 7.83 8.04 8.24


a. Find the xÌ… and R for each of the five samples.

b. Find xÌ…Ì… the and RÌ…. 

c. Find the 3-sigma UCL and LCL for the mean and range charts.

d. Does the process look to be in statistical control. Why/why not?

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Related Book For  book-img-for-question

Principles of Supply Chain Management A Balanced Approach

ISBN: 978-1337406499

5th edition

Authors: Joel D. Wisner, Keah Choon Tan, G. Keong Leong

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