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

question 246

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.
$$\begin{array} { cc c } \underline { \text { Hour } } & \underline { X } & \underline { R } \\1 & 18.4 & 25 \\2 & 16.9 & 27 \\3& 23.0 & 30 \\4 & 21.2 & 23 \\5 & 21.0 & 24 \\6 & 24.0 & 25 \\7&19.3&12\\8 & 15.8 & 14 \\9 & 20.0 & 13 \\10 & 23.0 & 11\end{array}$$ 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, suppose the supervisor constructs an R chart to see if the variability in collection times is in-control.This R chart is characterized by which of the following?

• A)Decreasing trend
• B)Increasing trend
• C)In-control
• D)Individual outliers

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Definitions:

Incentive Pay

A form of compensation designed to reward employees for achieving specific performance targets, thereby motivating them to increase productivity.

Performance Measures

Metrics or indicators used to assess the efficiency, effectiveness, or outcomes of an activity, process, team, or organization.

Long-Term Goals

Objectives or targets that an individual or organization aims to achieve over an extended period, typically requiring considerable planning and effort.

Short-Term Goals

Objectives set to be achieved in the near future, typically within a time frame that does not exceed one year, to further progress toward longer-term goals.