Question: Whole Grains LLC uses statistical process control to ensure that its health-conscious, low-fat, multigrain sandwich loaves have the proper weight. Based on a previously stable

Whole Grains LLC uses statistical process control to ensure that its health-conscious, low-fat, multigrain sandwich loaves have the proper weight. Based on a previously stable and in-control process, the control limits of the x-and R-charts are: UCLx = 6.56. LCLx = 5.84, UCLR = 1.141, LCLR = 0. Over the past few days, they have taken five random samples four loaves each and have found the following.

Is the process still in control? Explain why or whynot.

Net Weight Sample Loaf #1 6.3 6.0 6.3 6.2 6.5 Loaf#2 6.0 6.0 4.8 6.0 6.6 Loaf#3 5.9 6.3 5.6 6.2 6.5 Loaf #4 5.9 5.9 5.2 5.9 6.9 2 4

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