Question: When the robot welder is functioning properly, the natural gas cylinders being produced have an average burst strength of 3400 psi, with a standard deviation

When the robot welder is functioning properly, the natural gas cylinders being produced have an average burst strength of 3400 psi, with a standard deviation of 100 psi. Determine the centerline and the upper and lower control limits for a 3-sigma mean control chart in which each sample consists of 4 cylinders.

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