There are three light bulbs in a chandelier. Probability that any light bulb will serve all year is 0,8. Random variable X – number of light bulbs that had to be changed in the chandelier within a year. Find the probability distribution of X. Compute expected value and standard deviation of X. Interpret your results.
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.
There are three light bulbs in a chandelier.
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