A shampoo company would like to use an x-bar mean chart to


A shampoo company would like to use an X-bar (mean) chart to assess the bottling process. The know from past experience that whenever the process is in control, bottle volume has a mean of 12 oz. with a standard deviation of 0.52 oz. The company plans to measure 43 bottles from the production line each hour and record the average fill in oz. If the company uses z = 3.0 what is the LCL?

Express with 2 decimals.

The answer is 11.76

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