Question: A company is setting up an x-bar control chart for a process running on a new machine. The equipment manufacturer provided the following information: the

A company is setting up an x-bar control chart for a process running on a new machine. The equipment manufacturer provided the following information: the population mean for the critical process measurement is 33.9 and the population standard deviation is 1.32. The company will use a sample size of 13 for its control chart.

What is the lower control limit for the x-bar chart?

The answer is: 32.8017

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