In a small area of a construction site there are seven construction workers. There is a 0.25 probability that each construction worker requires extra assistance from another construction worker from elsewhere. After these extra workers have moved into the small area, what is the variance of the number of construction workers in the small area. (You may assume that the probability of assistance required for each worker is independant of all the others) options:
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.
In a small area of a construction site there are seven construction workers. There is a 0.25 probability that each construction worker requires extra assistance from another construction worker from elsewhere. After these extra workers have moved into the small area, what is the variance of the number of construction workers in the small area. (You may assume that the probability of assistance required for each worker is independant of all the others)
options:
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