Over the last ten days, a manufacturer of cell phones counts the number of defective phones created in each eight-hour shift. The results are shown next. 
To construct a process control chart for the mean number defective, what is the upper control limit?
Definitions:
Adult Children
Adults who maintain a dependency relationship with their parents, often characterized by financial support or emotional reliance.
Infrequent Interactions
Occasional or rare engagements or communications between individuals or groups.
Open Disclosure
The practice of openly sharing information, including admitting mistakes or failures, in the spirit of transparency and honesty.
Conformity Orientation
The degree to which individuals in a group or family environment are expected to adhere to shared norms and values.
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