In a laboratory, there are two types of tests done for a concrete cubes: compression strength test and water absorption test .25% failed in compression test. 40% passed in water absorption test and 15% failed in both. Find: 1) Probability that a random sample selected is bad in compression test and good in absorption test. 2) Probability that a random sample selected is bad in absorption test and good in compression test. 3) The probability that a random sample selected is good in both test. 4) The probability that a random sample selected at least one of them is bad.

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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.