Question: do Blackboard XCIO A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that the

do Blackboard XCIO 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 1.5 ounces. Each day last week, he randomly selected four packages and weighed each. The data from that activity appear below. I Weight Day Monday Tuesday Wednesday Thursday Friday Package 1 23 23 20 18 18 Weight Package 2 Package 3 22 23 21 19 19 20 19 20 20 22 Package 4 20 21 21 17 22 (a) Calculate all sample means and the mean of all sample means (b) Calculate upper and lower 2-sigma x-bar chart controllimits that allow for natural variations c) Based on controllimits, is this process in control? Use the editor to format your one Lost Soved 7:43:06 PM 126 minutes remaining

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