Statistics Solutions

[Solution Library] Whole Grains LLC uses SPC to ensure that their health conscious, low fat, multi grain sandwich loaves have the proper weight of 6 oz.

Question: Whole Grains LLC uses SPC to ensure that their health conscious, low fat, multi grain sandwich loaves have the proper weight of 6 oz. Based on a previously stable and in control process, the control limits of the x and R charts are: UCL x = 6.56, LCL x = 5.84, UCL R = 1.141, LCL R = 0. Over the past few days, they have taken five random samples of four loaves and have found the following. Plot the control chart. Is the process still in control?

Sample # Loaf 1 Wt Loaf 2 Wt Loaf 3 Wt Loaf 4 Wt
1 6.3 6 5.9 5.9
2 6 6.1 6.3 5.8
3 6.3 4.8 5.6 5.3
4 6.2 6 6.2 5.9
5 6.5 6.4 6.5 6.8

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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