TABLE 18-4
a Factory Supervisor Is Concerned That the Time

question 71

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.
$$\begin{array} { l l l l } \text { Hour } & \bar { X } & \text { R } \\\hline 1 & 18.4 & 25 \\2 & 16.9 & 27 & \\3 & 23.0 & 30 & \\4 & 21.2 & 23 & \\5 & 21.0 & 24 & \\6 & 24.0 & 25 & \\7 & 19.3 & 12 \\8 & 15.8 & 14 & \\9 & 20.0 & 13 & \\10 & 23.0 & 11 &\end{array}$$ 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 percentage of the time it takes workers to complete an important production task will fall inside the specification limits?

Differentiate atoms based on their subatomic particle counts and arrangements.

Understand Avogadro's number and its implications in chemical quantification.

Predict the bonding capabilities of elements based on valence electron counts.

Recognize the significance of protons in identifying elements.

---

Definitions:

Supply Elastic

A measure of how much the quantity supplied of a good or service changes in response to a change in price.

Luxury Tax

A tax placed on expensive, non-essential products or services, aimed at curbing the consumption of luxury goods.

Middle Class

A social class made up of people who fall economically between the working class and the upper class, often defined by income, education, and occupation.

Customer Structures

The organization or arrangement of a company's customer base, typically segmented by needs, demographics, or behaviors.