- Calculate all sample means.

- Calculate the mean of all sample means.

- The Operations Management team wants to check if the central tendency of the process is in control. Which control chart should be used?

- Using the chart identified in part c determine the upper and lower (2-sigma) control limits. SHOW ALL THE WORK.

- Construct the appropriate control chart. LABEL ALL PARTS OF GRAPH.

- Is the process in control? Explain in detail your response.

- The Operations Management team would also like to check if the dispersion of the process is in control. Which control chart should be used?

- Using the chart identified in part g determine the upper and lower control limits.

- Construct the appropriate chart. LABEL ALL PARTS OF THE CHART.

- Explain in detail whether the process is in control.

- Explain in detail why it is necessary to construct both details.

11. A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from 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 appears below