Options for this answer are:   fit OR do not fit;   are not OR are;   a good chance OR very little chance;   is not OR is;   Test​ Statistic, X^2: 20.9222 Critical​ X^2: 15.5073 ​P-Value: 0.0074

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Options for this answer are:

 

fit OR do not fit;

 

are not OR are;

 

a good chance OR very little chance;

 

is not OR is;

 

Test​ Statistic, X^2: 20.9222
Critical​ X^2: 15.5073
​P-Value: 0.0074
The accompanying data table lists leading digits of 317 inter-arrival Internet traffic times for a computer, along with the frequencies of leading digits expected with
Benford's law. The accompanying technology results are obtained when testing for goodness-of-fit with the distribution described by Benford's law, and H, is rejected.
What does this result suggest about the possibility that the computer has been hacked? Is there any corrective action that should be taken?
Click here to view the data table.
Click here to view the technology_output.
Because the leading digits of inter-arrival traffic times
the distribution described by Benford's law, it appears that those times
typical. There is
that the computer has been hacked. Corrective action
needed.
Transcribed Image Text:The accompanying data table lists leading digits of 317 inter-arrival Internet traffic times for a computer, along with the frequencies of leading digits expected with Benford's law. The accompanying technology results are obtained when testing for goodness-of-fit with the distribution described by Benford's law, and H, is rejected. What does this result suggest about the possibility that the computer has been hacked? Is there any corrective action that should be taken? Click here to view the data table. Click here to view the technology_output. Because the leading digits of inter-arrival traffic times the distribution described by Benford's law, it appears that those times typical. There is that the computer has been hacked. Corrective action needed.
Leading Digit
Benford's Law
Leading Digits of
Inter-Arrival Traffic
Times
1
2
3
4
6
7
9.
30.1% 17.6% 12.5% 9.7%
7.9%
6.7%
5.8%
5.1%
4.6%
76
62
29
33
19
27
28
21
22
Transcribed Image Text:Leading Digit Benford's Law Leading Digits of Inter-Arrival Traffic Times 1 2 3 4 6 7 9. 30.1% 17.6% 12.5% 9.7% 7.9% 6.7% 5.8% 5.1% 4.6% 76 62 29 33 19 27 28 21 22
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