"Time headway" in traffic flow is the elapsed time betvween the time that one car finishes passing a fixed point and the instant that the next car begins to pass that point. Let X- the time headway for two randomly chosen consecutive cars on a freeway during a period of heavy flow (sec). Suppose that in a particular traffic environment, the distribution of time headway has the following form. x > 1 Rx) -10 (a) Determine the value of k for which fx) is a legitimate pdf. (b) Obtain the cumulative distribution function. x>1 F(x) = (c) Use the cdf from (b) to determine the probability that headway exceeds 2 sec. (Round your answer to four decimal places.) Use the cdf from (b) to determine the probability that headway is between 2 and 3 sec. (Round your answer to four decimal places.)
"Time headway" in traffic flow is the elapsed time betvween the time that one car finishes passing a fixed point and the instant that the next car begins to pass that point. Let X- the time headway for two randomly chosen consecutive cars on a freeway during a period of heavy flow (sec). Suppose that in a particular traffic environment, the distribution of time headway has the following form. x > 1 Rx) -10 (a) Determine the value of k for which fx) is a legitimate pdf. (b) Obtain the cumulative distribution function. x>1 F(x) = (c) Use the cdf from (b) to determine the probability that headway exceeds 2 sec. (Round your answer to four decimal places.) Use the cdf from (b) to determine the probability that headway is between 2 and 3 sec. (Round your answer to four decimal places.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:"Time headway" in traffic flow is the elapsed time between the time that one car finishes passing a fixed point and the instant that the next car begins to pass that point. Let X = the time headway for two randomly chosen consecutive cars on a freeway during a period of heavy flow (sec).
Suppose that in a particular traffic environment, the distribution of time headway has the following form.
x >1
f(x) =10
xs1
(a) Determine the value of k for which f(x) is a legitimate pdf.
(b) Obtain the cumulative distribution function.
x> 1
F(x) =
xs1
(c) Use the cdf from (b) to determine the probability that headway exceeds 2 sec. (Round your answer to four decimal places.)
Use the cdf from (b) to determine the probability that headway is between 2 and 3 sec. (Round your answer to four decimal places.)
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