Six free airline tickets will be shared by drawing lots among 15 people, of which 3 pairs A, B and C. a) What is the probability that pair A gets 2 plane tickets? b) What is the probability that each of the pairs A, B and C gets 1 flight ticket? c) Couples A and B agreed that if they get 2 or 3 plane tickets together, they will draw lots for which couple will get 2 plane tickets. What is the probability that pair A gets 2 plane tickets now?

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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.