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

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Definitions:

Ocean Currents

Large-scale movements of seawater, primarily driven by wind patterns, temperature differences, and the Earth's rotation, which circulate water across the globe.

Surface Ocean Currents

Movements of ocean water that occur at or near the ocean's surface, driven by wind, the Coriolis effect, differences in temperature and salinity, and the shape of ocean basins.

Ocean Basins

The deep and extensive depression of the Earth's surface that contains the world's ocean waters, surrounded by continental landmasses.

Counter Currents

Oceanographic phenomena where adjacent slivers of water move in opposite directions, significantly affecting climate and marine life.