7.18 Intrusion detection systems. The Journal of Research of theNational Institute of Standards and Technology (November-December 2003) published a study of a computer intrusiondetection system (IDS). The IDS is designed to provide analarm whenever unauthorized access (e.g., an intrusion) toa computer system occurs. The probability of the systemgiving a false alarm (i.e., providing a warning when no in-trusion occurs) is defined by the symbol a, while the prob-ability of a missed detection (i.e., no warning given when anintrusion occurs) is defined by the symbol 3. These symbolsare used to represent Type I and Type II error rates, respec-tively, in a hypothesis-testing scenario.a. What is the null hypothesis, Ho?b. What is the alternative hypothesis, Ha?c. According to actual data collected by the MassachusettsInstitute of Technology Lincoln Laboratory, only 1 in1,000 computer sessions with no intrusions resulted in afalse alarm. For the same system, the laboratory foundthat only 500 of 1,000 intrusions were actually detected.Use this information to estimate the values of a and ß.

The Type 1 and Type 2 errors are defined.

Answered: 7.18 Intrusion detection systems. The…

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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A psychologist is interested in constructing a 90% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 57 of the 741 randomly selected people who were surveyed agreed with this theory. a. With 90% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is between _____ and _____. b. If many groups of 741 randomly selected people are surveyed, then a different confidence interval would be produced from each group. About _____ percent of these confidence intervals will contain the true population proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain and about _____ percent will not contain the true population proportion.
7.18 INTRUSION DETECTION SYSTEMS. The Journal of Research of the National Institute of Standards and Technology (November-December 2003) published a study of a computer intrusion detection system (IDS). The IDS is designed to provide an alarm whenever unauthorized access (e.g., an intrusion) to a computer system occurs. The probability of the system giving a false alarm (i.e., providing a warning when no intrusion occurs) is defined by the symbol a, while the probability of a missed detection (i.e., no warning given when an intrusion occurs) is defined by the symbol 3. These symbols are used to represent Type I and Type II error rates, respectively, in a hypothesis-testing scenario. a. What is the null hypothesis, Ho? b. What is the alternative hypothesis, Ha?
Question 10
A major traffic problem in Baguio City can be seen in the intersection of Abanao and Maharlika. Let us assume that the probability of no traffic delay in one period, given no traffic delay in the preceding period, is 0.85 and that the probability of finding a traffic delay in one period, given a delay in the preceding period, is 0.75. Traffic is classified as having either a delay or a no-delay state, and the period considered is 30 minutes. Draw the transition diagram in 2 periods. (TREE DIAGRAM)
When LeBron James shoots a free throw, he hits with a probability of 0.9 and misses with a probability of 0.1. Assume that the result of his previous free throw (whether a hit or a miss), does not affect the probability with which he hits the current throw, i.e., for any free throw he shoots, he hits with a probability of 0.9 and misses with a probability of 0.1. When he hits a free throw, he makes one point and when he misses a free throw, he makes zero points. Answer the following questions with this information. Let P1 denote a random variable that represents the number of points LeBron James makes when he shoots only one free throw. 1. How many possible values can P1 take? Develop a probability distribution for P1 (Very important: Enter the values of P1 in increasing order as you go down in the table) P1 f(P1) (1 decimal) (1 decimal)
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Please help me determine what the probability was that it was a boy is
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section 5.5 A personnel director has two lists of applicants for jobs. List 1 contains names of 24 women and 8 men, whereas List 2 contains the names of 9 women and 16 men. A name is randomly selected from List 1 and added to List 2. A name is then randomly selected from the augmented List 2. Given that the name selected is that of a man, what is the probability that a woman's name was originally selected from List 1? Round your answer to four decimal places, if necessary.
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