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.
-Referring to Table 14-4, suppose the supervisor constructs an 
chart to see if the process is in control. What is the center line of the chart?
Definitions:
Reverend
A title used preceding the name of a member of the clergy or religious leader.
Hacking
Unauthorized access to computer systems or networks with the intent to steal, alter, or destroy information.
Antitrust Activities
Actions or practices that stifle competition, violate antitrust laws, and are aimed at establishing or maintaining a monopoly.
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