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    Developing a Control Chart

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    Jamison Kovach Supply Company manufactures paper clips and other office products. Although inexpensive. Paper clips have provided the firm with a high margin of profitability. Sample size is 200. Results are given for the last 10 samples:

    SAMPLE 1 2 3 4 5 6 7 8 9 10
    DEFECTIVES 5 7 4 4 6 3 5 6 2 8

    a) Establish upper and lower control limits for the control chart and graph the data.
    b) Is the process in control?

    If the sample size were 100 instead, how would your limits and conclusions change

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    Solution Summary

    This solution develops and analyzes a control chart for the given case with step-by-step calculations in an Excel file. It determines the upper and lower control limits, graphs the data.