Question: A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, he randomly selected four packages and

A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, he randomly selected four packages and weighed each. The data from that activity appear below. Day(Samples) Monday Tuesday Wednesday Thursday Friday Weight (Observations) Package 1 Package 2 Package 3 Package 4 23 22 23 24 23 21 19 21 20 19 21 18 19 19 18 20 20 20 20 22 A Construct x-bar and R-charts considering z=3. Is the process in control

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