Modern email servers and anti-spam filters attempt to identify spam emails and direct them to a junk folder. An information security engineer tries to confirm that the chance for an email to be spam depends on whether it contains images or not. The following data were collected on 1000 random email messages. At a 5% level of significance test hypothesis that being spam and containing images are independent factors? With images No Images Total Spam 160 240 400 No Spam 140 460 600 Total 300 700 1000
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Modern email servers and anti-spam filters attempt to identify spam emails
and direct them to a junk folder. An information security engineer tries to
confirm that the chance for an email to be spam depends on whether it
contains images or not. The following data were collected on 1000 random
email messages. At a 5% level of significance test hypothesis that being
spam and containing images are independent factors?
With images No Images Total
Spam 160 240 400
No Spam 140 460 600
Total 300 700 1000
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