TABLE 14-4 A Factory Supervisor Is Concerned That the Time It Takes

question 83

True/False

TABLE 14-4
A factory supervisor is concerned that the time it takes workers to complete an important production task (measured in seconds) is too erratic and adversely affects expected profits. The supervisor proceeds by randomly sampling 5 individuals per hour for a period of 10 hours. The sample mean and range for each hour are listed below.

She also decides that lower and upper specification limit for the critical-to-quality variable should be 10 and 30 seconds, respectively.
-It is not possible for the chart to be out of control when the R chart is in control.

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Definitions:

Inventory Management

The practice of overseeing and controlling the ordering, storage, and use of components that a company uses in the production of the items it sells.

Supply Chain Management

The oversight of materials, information, and finances as they move from supplier to manufacturer to wholesaler to retailer to consumer.

Work In Process

Inventory or products that are in the production process but are not yet completed, representing a stage between raw materials and finished goods.

Just-In-Time (JIT) Scheduling

Minimises inventory by routing materials to workstations ‘just in time’ to be used.