Exhibit 13.1 The Following Questions Are Based on the Output Below

question 37

Multiple Choice

Exhibit 13.1
The following questions are based on the output below.
A store currently operates its service system with 1 operator. Arrivals follow a Poisson distribution and service times are exponentially distributed. The following spreadsheet has been developed for the system.
-What is the mean arrival rate based on the following 8 arrival rate observations? ​
Number of arrivals per hour: 6, 5, 3, 4, 7, 6, 4, 5
​

• A) 3
• B) 4
• C) 5
• D) 6

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Definitions:

Radioactive Isotope

An isotope of an element that has an unstable nucleus and emits radiation during its decay to a stable form.

Greenhouse Effect

The process by which radiation from a planet's atmosphere warms the planet's surface more than it would without this atmosphere, largely due to greenhouse gases.

Troposphere

The lowest layer of Earth's atmosphere, where weather happens and where most of the planet's atmospheric water vapor exists.