A Trucking Firm Has Five Trucks That Each Requires Service

question 14

Multiple Choice

A trucking firm has five trucks that each requires service at an average rate of once every 50 hours, according to an exponential distribution. The firm has a mechanic who needs five hours to complete the average job with exponential service times.
-Use the information in Scenario C.5.What is the average waiting time of trucks in line?

• A) Fewer than or equal to 1.5 hours
• B) Greater than 1.5 hours but fewer than or equal to 1.7 hours
• C) Greater than 1.7 hours but fewer than or equal to 1.9 hours
• D) Greater than 1.9 hours

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Definitions:

Systematic observation

An observational research method where data is collected in a structured, organized, and methodical manner.

Reactivity

The influence that the process of measuring has on the subjects being measured, potentially affecting the results of a study.

Observers

Individuals who watch, monitor, or record the behavior or data in a study, without intervening or interacting with the subjects.

Coding system

A method or protocol used in research for categorizing, labeling, or encoding information to facilitate analysis.