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Carrchris021
Carrchris021
17.07.2020 • 
Mathematics

An intrusion detection system (IDS) is designed to provide an alarm whenever unauthorized access to a computer system occurs. The probability of the system giving a false alarm is defined by the symbol alphaα, while the probability of a missed detection is defined by the symbol betaβ. 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, H0? b. What is the alternative hypothesis, Ha?
c. According to a college research laboratory, only 33 in 3 comma 0003,000 computer sessions with no intrusions resulted in a false alarm. For the same system, the laboratory found that only 400400 of 2 comma 0002,000 intrusions were actually detected. Use this information to estimate the values of alphaα and betaβ.


An intrusion detection system (IDS) is designed to provide an alarm whenever unauthorized access t

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