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

question 215

Short Answer

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

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Definitions:

Mechanical Aptitude Test (MAT-3C)

An exam designed to assess an individual's ability to understand and apply mechanical concepts and principles.

Test Category

A way to organize assessments based on common features or the objectives they aim to achieve.

U.S. Postal Service's 473 Battery Examination

A test used by the United States Postal Service to assess the aptitude and suitability of applicants for various postal positions.

Test Category

A classification or grouping of tests based on certain criteria, like their purpose or the skills they assess.