TABLE 18-4
a Factory Supervisor Is Concerned That

question 45

Short Answer

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.
$\begin{array} { l l l } \text { Hour } &\bar{X} & \text { R }\\\hline 1 & 18.4 & 25 \\ 2 & 16.9 & 27 \\ 3 & 23.0 & 30 \\ 4 & 21.2 & 23 \\ 5 & 21.0 & 24 \\ 6 & 24.0 & 25 \\ 7 & 19.3 & 12 \\ 8 & 15.8 & 14 \\ 9 & 20.0 & 13 \\ 10 & 23.0 & 11 \end{array}$
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, what is the value of the CPL index?

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Definitions:

Stress

A reaction of the body and mind to demanding or threatening situations, invoking a physiological and psychological response.

Internal Locus of Control

The belief that one has control over their life and outcomes, attributing success and failure to one's own efforts and abilities.

Life Satisfaction

A measure of how people evaluate their lives as a whole rather than their current feelings.

Immune Responses

Biological processes that the body's immune system uses to recognize and defend against harmful pathogens like bacteria, viruses, and other foreign substances.