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

question 233

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 C pk index?

---

Definitions:

Legal Permissibility

The extent to which an action or procedure is allowed within the bounds of the law.

Court Precedent

A legal decision made by a court that serves as an example or rule to be followed in future similar cases.

Insurance

A financial agreement where individuals or entities receive protection or reimbursement against losses from an insurer, in exchange for premium payments.

Exculpatory Clause

A contract term that releases one party from liability for harm or damage that might occur to another party, often found in service agreements and waivers.