The number of packets, X, delivered to a router, is known to be Poisson distributed with A = 6 packets per hour The probability mass function (pmf) of the Poisson random variables is x = 0, 1, 2, ... x! px(x) = 0, otherwise The probability that no more than 3 packets will be delivered during a 42-minutes interval is 00.21024 00.6046 00.38041 00.3954

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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.