A glass manufacturer produces hand mirrors. Each mirror is supposed to meet company standards for such things as glass thickness, ability to reflect, size of handle, quality of glass, color of handle, and so onto control for these features, the company quality people randomly sample 40 mirrors every shift and determine how many of the mirrors are out of compliance on at least one feature. Shown here are the data for 15 such samples. Use the data to construct a p chart. Observe the results and comment on the control of the process as indicated by thechart.
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