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

---

Definitions:

Disillusionment

The sensation of letdown that occurs upon realizing something isn't as great as previously thought.

Internship

A period of work experience offered by an organization for a limited period of time, often for students or recent graduates.

Disillusioned

The feeling of disappointment arising from the discovery that something is not as good as one believed it to be.

Sidetracked

Deviation from the main issue, topic, or task at hand.