TABLE 17-3
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic. Accordingly, the analyst randomly surveys 10 production periods each day for 14 days and records the sample mean and range for each day.
-Referring to Table 17-3, suppose the analyst constructs an 
chart to see if the production process is in-control. What is the upper control limit (UCL) for this chart?
Definitions:
Underapplied Manufacturing Overhead
A situation where the allocated manufacturing overhead cost is less than the actual overhead cost incurred.
Estimated Total Manufacturing Overhead
The projected sum of all manufacturing costs (excluding direct labor and direct materials) expected to be incurred over a specific period.
Schedule of Cost of Goods Manufactured
A detailed statement listing the total costs incurred in the production process to arrive at the cost of goods manufactured.
Work in Process Inventory
Items in a manufacturing process that are in progress but not yet completed.
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