Question: undefined Answer the next three questions using the following information. A quality analyst wants to construct a sample mean chart for controlling a packaging process.

undefined Answer the next three questions using undefined

Answer the next three questions using the following information. A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that the process standard deviation is two ounces. Each day last week, he randomly selected four packages and weighed each. The data appears below. Day Monday Tuesday Wednesday Thursday Friday Package 1 23 23 20 18 18 Weight Package 2 Package 3 Package 4 22 23 24 21 19 21 19 21 19 20 19 20 22 20 20 What is the overall sample mean? What is the lower 2-sigma x-bar chart control limit? 20.5 18.9 22.6 18.6 2-sigma

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