From records, 18%, 22%, 26% and 34% of documents are prepared by Ada, Betty, Cathy and Dorothy respectively and their corresponding probability of missing the submission deadline are 0.02, 0.08, 0.03 and 0.05 respectively. (i) Suppose a document is selected randomly and it missed the deadline. Calculate the probability that this document was prepared by Ada. (ii) Suppose eight documents are selected randomly and all of them missed the deadline. Calculate the probability that two of them were prepared by Ada.
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 four secretaries in a company. From records, 18%, 22%, 26% and 34% of documents are prepared by Ada, Betty, Cathy and Dorothy respectively and their corresponding
(i) Suppose a document is selected randomly and it missed the deadline. Calculate the probability that this document was prepared by Ada.
(ii) Suppose eight documents are selected randomly and all of them missed the deadline. Calculate the probability that two of them were prepared by Ada.
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