A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then, once the machine is running, a sample of six tubes is taken every three hours and weighed with the following results: 
What is the upper control limit (UCL) for the mean?
Definitions:
Opportunity Cost
Opting for one opportunity causes the relinquishment of possible gains from not selected alternatives.
Production Possibilities Curve
The Production Possibilities Curve (PPC) is a graphical representation that shows the maximum quantity of two goods or services that can be produced with limited resources.
Future Location
Refers to a place where something is expected or planned to be situated at a later time.
Economic Generalizations
General statements that summarize common relationships or patterns within an economy, often derived from empirical observations and economic theory.
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