TABLE 18-4 A Factory Supervisor Is Concerned That the Time It Takes

question 55

Multiple Choice

TABLE 18-4
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.
-Referring to Table 18-4,suppose the supervisor constructs an chart to see if the process is in-control.What is the center line of the chart?

• A)20.00
• B)20.26
• C)21.00
• D)24.26

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Definitions:

Communication Channel

The medium or method through which information is transmitted from one entity to another.

Impersonality

The quality of being devoid of personal feeling or bias, often associated with objectivity or detached professionalism.

Division of Labor

The assignment of different tasks to different people or groups in an organization to increase efficiency and productivity.

Span of Control

The number of subordinates or units that a manager or leader can directly control or supervise effectively.