What impact does given change in cutoff value have

Reference no: EM131421700

Spam filters try to sort your e-mails, deciding which are real messages and which are unwanted. One method used is a point system. The filter reads each incoming e-mail and assigns points to the sender, the subject, key words in the message, and so on. The higher the point total, the more likely it is that the message is unwanted. The filter has a cutoff value for the point total; any message rated lower than that cutoff passes through to your inbox, and the rest, suspected to be spam, are diverted to the junk mailbox.

We can think of the filter s decision as a hypothesis test. The null hypothesis is that the e-mail is a real message and should go to your inbox. A higher point total provides evidence that the message may be spam; when there's sufficient evidence, the filter rejects the null, classifying the message as junk. This usually works pretty well, but, of course, sometimes the filter makes a mistake.

a) When the filter allows spam to slip through into your inbox, which kind of error is that?

b) Which kind of error is it when a real message gets classified as junk?

c) Some filters allow the user (that's you) to adjust the cutoff. Suppose your filter has a default cutoff of 50 points, but you reset it to 60. Is that analogous to choosing a higher or lower value of for a hypothesis test? Explain.

d) What impact does this change in the cutoff value have on the chance of each type of error?

Reference no: EM131421700

Questions Cloud

How disciplinary procedures affect the labor-management : Discuss how disciplinary procedures affect the labor-management agreement.

What is wrong with the given reasoning : Could Spike claim to the advertiser that it is possible that 25% of men with young children are stay-at-home dads? What is wrong with the reasoning?

How technology can benefit the transfer of learning : Write your initial response in 300-500 words. Your response should be thorough and address all components of the discussion question in detail, include citations of all sources, where needed, according to the APA Style, and demonstrate accurate sp..

Which type of error did the bank make : When a person defaults on a loan, which type of error did the bank make?- Which kind of error is it when the bank misses an opportunity to make a loan to someone who would have repaid it?

What impact does given change in cutoff value have : When the filter allows spam to slip through into your inbox, which kind of error is that?- Which kind of error is it when a real message gets classified as junk?

Ethical standards of business communications to coursework : Business Communications - Outline for Business Report Identify, select and compile information using appropriate technology and information systems and Apply ethical standards of business communications to coursework - Decide on a topic for your fina..

Discuss traditional roles of physicians within health care : The role of the physician has evolved significantly over the past 10 years. There has been an introduction of new physical roles at the hospital level, and primary care physicians have become little more than strategic gatekeepers.

Develop a budget of projected costs to implement initiative : You have recently been appointed as a training manager for the southeast region of a major supermarket chain in the U.S. Your territory includes 15 retail stores. Your responsibility involves working directly with store managers and other stakehol..

What could the bank do to increase the power : Suppose the bank decides to lower the cutoff score from 250 points to 200. Is that analogous to choosing a higher or lower value of for a hypothesis test? Explain.

User Account

All Pages