(a)
To explain what is meant by the power of the test in this context.
(a)
Explanation of Solution
It is given in the question that spam filter try to sort your e-mails deciding which are real messages and which are unwanted. The filter reads each incoming e-mail and assigns points to the sender, the subject, key words in the message and so on. Thus, in this context, we can say that power of the test is the
(b)
To explain what could you do to increase the filter’s power.
(b)
Answer to Problem 18E
Bank should raise the cut-off power.
Explanation of Solution
It is given in the question that spam filter try to sort your e-mails deciding which are real messages and which are unwanted. The filter reads each incoming e-mail and assigns points to the sender, the subject, key words in the message and so on. Thus, to increase the filter’s power, we shouldlower the cut-off score because the probability of correctly filtered emails would be increased.
(c)
To explain what is the disadvantage of doing that.
(c)
Explanation of Solution
It is given in the question that spam filter try to sort your e-mails deciding which are real messages and which are unwanted. The filter reads each incoming e-mail and assigns points to the sender, the subject, key words in the message and so on. Thus, the disadvantage of doing that is that more real emails would end up in the spam mailbox.
Chapter 21 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Basic Business Statistics, Student Value Edition (13th Edition)
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