Organic Grains LLC uses statistical process control to ensure that its health-conscious, low-fat, multigrain sandwich loaves have the proper weight.

Based on the R-chart, is one or more samples beyond the control limits?

Organic 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: UCLE = 5.43, LCLE = 4.89; UCLR = 1.237, LCLR = 0. Over the past few days, they have taken five random samples of four loaves each and have found the following: Sample 1 2 3 4 5 Loaf # 1 4.9 5.4 5.0 4.9 5.2 Net Weight Loaf #2 Loaf # 3 5.0 5.3 5.4 5.3 4.7 5.1 4.9 5.1 5.2 5.3 Loaf #4 4.9 5.5 4.8 4.9 5.4