An urn contains 5 red and 3 white balls. Two balls are drawn in succession without replacement. If the second ball is white, what is the probability that the first ball was white?
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.
An urn contains 5 red and 3 white balls. Two balls are drawn in succession without replacement. If the second ball is white, what is the
Given:-
red balls =5
white balls =3
total balls =3+5 =8
Two balls are drawn without replacement. given that second ball is white.
we have to find the probability that first ball was white.
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