Figure 6S-1
Customers Enter a Haberdashery That Sells Only Ascots

question 70

Multiple Choice

Figure 6S-1
Customers enter a haberdashery that sells only ascots, cufflinks and suspenders and are served by the owner operator. The owner is the only employee, so if customer B arrives while customer A is being served, customer B must patiently wait until customer A exits the system. Customers are always willing to wait regardless of how long their wait is. The interarrival and service times are uniformly distributed and shown in the table below.
$$\begin{array} { | c | c | c | } \hline \text { Range } & \text { Interarrival (min) } & \text { Service (min) } \\\hline 0.000 - 0.200 & 3 & 6 \\\hline 0.201 - 0.400 & 6 & 7 \\\hline 0.401 - 0.600 & 9 & 8 \\\hline 0.601 - 0.800 & 12 & 9 \\\hline 0.801 - 1.000 & 15 & 10 \\\hline\end{array}$$ The stream of random number for a Monte Carlo simulation of the system appear in this table>
$$\begin{array} { | c | c | } \hline \text { Interarrival } & \text { Service } \\\hline .114 & .979 \\\hline .899 & .297 \\\hline .925 & .162 \\\hline .085 & .574 \\\hline .824 & .235 \\\hline .151 & .593 \\\hline .223 & .956 \\\hline .477 & .845 \\\hline\end{array}$$
-Use the data from Figure 6S-1. What is the total time the owner/operator is idle (has no customers) from 8:00 am to 9:15 am?

• A)3 minutes
• B)8 minutes
• C)16 minutes
• D)20 minutes

---

Definitions:

Biodiversity

The variety of life in the world or in a particular habitat or ecosystem, including the diversity of species, genetics, and ecosystems.

Human Ecosystems

Complex systems of interaction between human communities and their environment, integrating social, cultural, and economic dimensions.

Dominant Social Paradigm

A prevailing set of attitudes, beliefs, and practices in society that tends to persist over time, influencing social norms and values.

Alternative Environmental Paradigm

Advocates living in harmony with the environment, not dominating it.