TABLE 17-4 A Factory Supervisor Is Concerned That the Time It Takes

question 108

Multiple Choice

TABLE 17-4
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 17-4, suppose the supervisor constructs an R chart to see if the variability in collection times is in-control. What is the center line of this R chart?

• A) 20.00
• B) 20.56
• C) 20.40
• D) 24.00

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Definitions:

Sale of Guns

The process or activity of buying and selling firearms, which is regulated by various laws and regulations to ensure public safety.

Navigable Waterways

Water bodies that are deep and wide enough for ships and boats to travel through, often playing a key role in transportation and trade.

Federal System

A form of government in which power is divided between a central authority and constituent political units.

Unitary

A system of government where a single central government holds the majority of the power, with any regional or local governments having authority that is delegated from the central government.