TABLE 18-4
a Factory Supervisor Is Concerned That

question 45

Short Answer

TABLE 18-4
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.
$\begin{array} { l l l } \text { Hour } &\bar{X} & \text { R }\\\hline 1 & 18.4 & 25 \\ 2 & 16.9 & 27 \\ 3 & 23.0 & 30 \\ 4 & 21.2 & 23 \\ 5 & 21.0 & 24 \\ 6 & 24.0 & 25 \\ 7 & 19.3 & 12 \\ 8 & 15.8 & 14 \\ 9 & 20.0 & 13 \\ 10 & 23.0 & 11 \end{array}$
She also decides that lower and upper specification limit for the critical-to-quality variable should be 10 and 30 seconds, respectively.
-Referring to Table 18-4, what is the value of the CPL index?

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Definitions:

Asthma

A chronic inflammatory disease of the airways in the lungs, characterized by recurrent episodes of wheezing, breathlessness, chest tightness, and coughing.

Infusion Rate

The speed at which liquids, especially drugs or nutrients, are administered intravenously.

Drug Y

A placeholder name for a hypothetical or unspecified medication used in discussions or examples.

Flow Rate

The volume of fluid that passes a point in a system per unit time, often measured in liters per hour or milliliters per hour in medical contexts.