Construct an R chart and determine whether the process variation is within statistical control. A machine is supposed to fill cans that contain 12 ounces. Each hour, a sample of four cans is tested; the results of 15
consecutive hours are given below.

Question

Construct an R chart and determine whether the process variation is within statistical control.  A machine is supposed to fill cans that contain 12 ounces. Each hour, a sample of four cans is tested; the results of 15
consecutive hours are given below.

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Construct an R Chart and Determine Whether the Process Variation