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

question 29

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 that customers must wait from 8:00 am to 9:15 am?

• A)17 minutes
• B)18 minutes
• C)19 minutes
• D)20 minutes

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Definitions:

F-ratio

A statistical measure used in the analysis of variance (ANOVA) to compare the variance between groups with the variance within groups.

F-ratio

A statistical measure used in the analysis of variance (ANOVA) to determine the ratio of variance between groups to the variance within groups.

Null Hypothesis

The default hypothesis that there is no significant difference or relationship between specified populations, any observed effect is due to sampling or experimental error.

GPAs

Grade point averages, numerical calculations that represent the average performance of a student across all completed courses.