There are 600 economics students in the post graduate class of a university, and the probability for any student to need a copy of a particular book form the university library on any day is 0.05. How many copies of the book should be kept in the university library so that the probability may be greater than 0.9 that none of the students needing a copy from the library has to come back disappointed?
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 600 economics students in the post graduate class of a university, and the
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