Exhibit 13 -Refer to Exhibit 13

question 18

Essay

Exhibit 13.3
The following questions refer to the information below.
A company has recorded the following customer inter-arrival times and service times for 10 customers at one of its single teller service lines.Assume the data are exponentially distributed and the 10 data points represent a reasonable sample.
All time in minutes
$$\begin{array} { r r r } \text { Customer } & \text { Inter-arrival } & \text { Service } \\\hline 1 & 11.08 & 2.20 \\2 & 2.50 & 2.50 \\3 & 6.00 & 1.10 \\4 & 5.75 & 14.50 \\5 & 8.50 & 2.00 \\6 & 4.15 & 2.70 \\7 & 15.50 & 5.00 \\8 & 13.00 & 8.50 \\9 & 10.50 & 5.00 \\10 & 6.00 & 1.50\end{array}$$
-Refer to Exhibit 13.3.What is the average number of customers in the service line?

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Definitions:

IR Absorption

A spectroscopic technique that measures the absorption of infrared light by molecules, used to identify certain functional groups based on their vibrational energy.

Hydrogenation

A chemical reaction where hydrogen is added to double or triple bonds in an organic compound, often resulting in saturated compounds.

2-Pentene

An alkene with the formula C5H10, featuring a double bond between the second and third carbon atoms.

Pentane

A straight-chain alkane with the formula C5H12, used as a solvent in the laboratory and as a standard in certain types of chromatography.