ations (nodes). Assume that, at a given moment, each node can be active with probability ? = 0.1. (a) What is the probability that all five stations are active? (b) What is the mean number of active stations at a give

ations (nodes). Assume that, at a given moment, each node can be active with probability ? = 0.1. (a) What is the probability that all five stations are active? (b) What is the mean number of active stations at a give

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter12: Forecasting Travel Demand

Section: Chapter Questions

Problem 17P

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Concept explainers

Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.

Question

3. Consider a local area network with 10 stations (nodes). Assume that, at a given moment, each node
can be active with probability ? = 0.1.
(a) What is the probability that all five stations are active?
(b) What is the mean number of active stations at a given moment?

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