A box contains 20 electric lamps of which 5 are defective. A man selects two lamps randomly and he receives Rs. 5 for every good lamp, he selects and Rs.10 for every defective lamp. Estimate his expected gain.
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.
A box contains 20 electric lamps of which 5 are defective. A man selects two lamps
randomly and he receives Rs. 5 for every good lamp, he selects and Rs.10 for every
defective lamp. Estimate his expected gain.
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