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

question 163

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 CPU index?

---

Definitions:

Contract Rate

The agreed-upon price or rate specified in a contract for services or goods, often locked in for the duration of the agreement.

Issue Price

The price at which securities, such as bonds or shares, are originally sold to the public or investors by the issuing entity.

Installment Note Payable

A debt instrument that requires a series of periodic payments to the lender over a specified period of time.

Interest Expense

The expenditure an entity incurs from borrowing funds during a certain period.