Jenny sells 'honey tea' to raise fund for homeless people. The probability of making a sale is, independently, 0.3 for each person she approaches. a) Given that she approaches 10 people, find the probability that she will makes at most 3 sales. Interpret the value obtained. b) What is the probability that she will makes the first sale at the fifth person she approaches?

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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.