Question
In: Statistics and Probability
"Time headway" in traffic flow is the elapsed time between the time that one car finishes...
"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.
f(x) =
|
x > 1 | |||
| 0 | x ≤ 1 |
(a) Determine the value of k for which
f(x) is a legitimate pdf.
(b) Obtain the cumulative distribution function.
F(x) =
| x > 1 | ||
| 0 | x ≤ 1 |
(c) Use the cdf from (b) to determine the probability that headway
exceeds 2 sec. (Round your answer to three decimal places.)
Use the cdf from (b) to determine the probability that headway is
between 2 and 3 sec. (Round your answer to three decimal
places.)
(d) Obtain the mean value of headway and the standard deviation of
headway. (Round your answers to three decimal places.)
| mean | ||
| standard deviation |
(e) What is the probability that headway is within 1 standard
deviation of the mean value? (Round your answer to three decimal
places.)
Solutions
Expert Solution
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orchestra answered 2 years agoRelated Solutions
" time headway" in traffic flow is the elapsed time between the time that one car...
" 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. Suppose that in a different traffic
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Table: Insurance Claim Approval Times (days) Old Process New Process Week Elapsed Time Week Elapsed...
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Old Process
New Process
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Elapsed Time
Week
Elapsed Time
1
31.7
13
24
2
27
14
25.8
3
33.8
15
31
4
30
16
23.5
5
32.5
17
28.5
6
33.5
18
25.6
7
38.2
19
28.7
8
37.5
20
27.4
9
29
21
28.5
10
31.3
22
25.2
11
38.6
23
24.5
12
39.3
24
23.5
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