Instruction 18-7
a Factory Supervisor Is Concerned That the Time

question 112

Multiple Choice

Instruction 18-7
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 five 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.
$$\begin{array} { | l | l | l | } \hline \text { Hour } & \underline { \underline { X } } & \underline { R } \\\hline 1 & 18.4 & 25 \\\hline 2 & 16.9 & 27 \\\hline 3 & 23.0 & 30 \\\hline 4 & 21.2 & 23 \\\hline 5 & 21.0 & 24 \\\hline 6 & 24.0 & 25 \\\hline 7 & 19.3 & 12 \\\hline 8 & 15.8 & 14 \\\hline 9 & 20.0 & 13 \\\hline 10 & 23.0 & 11 \\\hline\end{array}$$
-Referring to Instruction 18-7,suppose the supervisor constructs an R chart to see if the process is in control.Which expression best describes this chart?

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

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Definitions:

Harm To Persons

Any physical, psychological, or emotional injury inflicted upon an individual.

Walling-Off Procedures

Strategies used by organizations to prevent the exchange of sensitive information between departments or team members to avoid conflicts of interest.

Legal Professionals

Individuals working within the legal system, including lawyers, judges, and paralegals, who are trained to apply the law.

Opposing Counsel

The attorney representing the adversary in a legal dispute, engaged in litigation against one's client.