Three people toss a fair coin and the odd man pays for coffee. If the coins all turn up the same, they are tossed again. (a) Find the probability that fewer than 4 tosses are needed. (b) Provide a general formula for the probability of at most x tosses are needed. 6.

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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.