Question: 2. You are constructing a Mean Chart (xbar-chart or x-chart) with the following information: 1 2 3 4 Samples 3 1 2 4 5 12.11

2. You are constructing a Mean Chart (xbar-chart or x-chart) with the following information: 1 2 3 4 Samples 3 1 2 4 5 12.11 12.15 12.09 12.12 12.09 12.10 12.12 12.09 12.10 12.14 12.11 12.10 12.11 12.08 12.13 12.08 12.11 12.15 12.10 12.12 12.10 12.12 12.11 12.10 12.12 a) Find the three-sigma control limits, given that o=0.02. b) Find the control limits assuming is not known.

2. You are constructing a Mean Chart (xbar-chart or x-chart) with the following information: a) Find the three-sigma control limits, given that =0.02. b) Find the control limits assuming is not known

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