Suppose that the number of guests per month that members of a country club bring to golf is given by the following probability distribution: 56% of the members don't have any guests each month, 18% of the members have 1 guest per month to the club; 13% of the members have 2 guests per month; and the remaining members have 3 guests per month. What is the expected value of the number of guests that members bring out each month? (please express your answer using 2 decimal places)

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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.