Type the probability that someone in this study is from the low income group or from the medium income group.
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.
The following data come from a study of the relationship between health risk and income.
The number of low income people is 2680, the number of medium income people is 2550, and the number of high income people is 1700. Type the probability that someone in this study is from the low income group or from the medium income group.
(Type the probability rounded to two decimal places with no 0; e.g., .34).
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