A bottled water plant utilizes a production process designed to fill bottles with 20 ounces of water.The population of filling volumes is normally distributed with a standard deviation of 1.3 ounces.Periodically,process engineers take 20-bottle samples and compute the sample mean.
A)What are the upper and lower control limits?
B)Suppose the last five sample means were 19.4,20.2,20.5,20.7,and 21.1 ounces.Is the process under control?

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The Answer of A bottled water plant utilizes a production process designed to fill bottles with 20 ounces of water.The population of filling volumes is normally distributed with a standard deviation of 1.3 ounces.Periodically,process engineers take 20-bottle samples and compute the sample mean.
A)What are the upper and lower control limits?
B)Suppose the last five sample means were 19.4,20.2,20.5,20.7,and 21.1 ounces.Is the process under control?

A Bottled Water Plant Utilizes a Production Process Designed to Fill