a) 0.26 (b) 0.42 C 0.58 d 0.74
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.
18. A course of 100 students has taken two exams: one for mathematics and the other for Spanish. It is known that 24 students passed math, 42 Spanish and 8 passed both exams. If a student is chosen at random, how likely is it that he or she has not passed an exam?
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