The numbers of blocked intrusion attempts on each day during the first two weeks of the month were 56 47 49 37 38 60 50 50 56 54 58 43 43 59 After the change of firewall settings, the number of blocked intrusions during the next 20 days were 53 32 43 21 32 49 45 38 44 33 36 48 39 35 37 36 39 45 46 a) Construct a 99% confidence interval for the difference between the average number of intrusion attempt per day before and after the change of firewall settings (assume equal variances). b) Can we claim a significant reduction in the rate of intrusion attempts at 0.01 level of significance? The number of intrusion attempts each day has approximately Normal distribution with the assumption o equal variances.
The numbers of blocked intrusion attempts on each day during the first two weeks of the month were 56 47 49 37 38 60 50 50 56 54 58 43 43 59 After the change of firewall settings, the number of blocked intrusions during the next 20 days were 53 32 43 21 32 49 45 38 44 33 36 48 39 35 37 36 39 45 46 a) Construct a 99% confidence interval for the difference between the average number of intrusion attempt per day before and after the change of firewall settings (assume equal variances). b) Can we claim a significant reduction in the rate of intrusion attempts at 0.01 level of significance? The number of intrusion attempts each day has approximately Normal distribution with the assumption o equal variances.
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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Transcribed Image Text:The numbers of blocked intrusion attempts on each day during the first two weeks of the month were
56
47
49
37
38
60
50
50
56
54
58
43
43
59
After the change of firewall settings, the number of blocked intrusions during the next 20 days were
53
21
32 43
32 49 45 38
48 39 35 37
44 33
36 39 45
46
36
a) Construct a 99% confidence interval for the difference between the average number of intrusion attempts
per day before and after the change of firewall settings (assume equal variances).
b) Can we claim a significant reduction in the rate of intrusion attempts at 0.01 level of significance? The
number of intrusion attempts each day has approximately Normal distribution with the assumption of
equal variances.
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