Exhibit 13 -Refer to Exhibit 13

question 68

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 time a customer spends in the service line?

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Definitions:

Duty Of Performance

An obligation in contract law requiring parties to complete their contractual obligations to a satisfactory standard.

Nonoccurrence

Refers to an event that was expected or scheduled to take place but did not actually occur.

Basic Assumption

An underlying, fundamental premise or belief that is accepted as true without proof.

Tender Can Be Made

Indicates that an offer or presentation of payment or performance in accordance with the terms of a contract is possible or has occurred.