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

question 81

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 chart to see if the process is in-control. Which expression best describes this chart?

• A) Decreasing trend
• B) Hugging the center line
• C) Increasing trend
• D) Cycles

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Definitions:

Levinson

A reference to Daniel Levinson, a psychologist known for his theory on human development stages throughout the lifespan.

Psychosocial Theory

A theory proposed by Erikson that suggests human development is influenced by and unfolds in a series of eight stages that involve psychological and social conflicts.

Life Structure

The pattern or organization of one's life, shaped by roles, relationships, and activities, as conceptualized in developmental psychology.

Levinson

Refers to Daniel Levinson, a psychologist who developed theories on human development, focusing on the stages of life, particularly adult development.