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A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in control with regard to
A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in control with regard to a particular quality attribute. Accordingly, she inspected units of output from each machine in random samples, with the following results
Machine Total Defectives
#
#
#
#
For upper and lower control limits of and which machines if any, appears to be outofcontrol for process proportion of defectives?
Group of answer choices
machine #
machine #
machines # and #
machines # and #
none of the machines
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