SCENARIO 15-4
a Factory Supervisor Is Concerned That the Time

question 13

Multiple Choice

SCENARIO 15-4
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.
$\begin{array} { r c c } \text { Hour } & \underline { X } & \underline { R } \\1 & 18.4 & 25 \\2 & 16.9 & 27 \\3 & 23.0 & 30 \\4 & 21.2 & 23 \\5 & 21.0 & 24 \\6 & 24.0 & 25 \\7 & 19.3 & 12 \\8 & 15.8 & 14 \\9 & 20.0 & 13 \\10 & 23.0 & 11\end{array}$ She also decides that lower and upper specification limit for the critical-to-quality variable should be
10 and 30 seconds, respectively.
-Referring to SCENARIO 15-4, suppose the supervisor constructs an X chart to see if the process is in-control.What is the center line of the chart?

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Definitions:

Organizational Requirements

The needs or conditions that an organization must meet to achieve its objectives effectively.

HR Forecasting

The process of predicting future human resources needs of an organization based on current data, trends, and projected changes in the business environment.

Workforce Knowledge

The collective skills, expertise, and understanding possessed by an organization’s employees.

Skill Competencies

The set of abilities, knowledges, and skills that enable an employee to perform job tasks successfully.