An urn contains three red and two white balls. A ball is drawn, and then it and another ball of the same color are placed back in the urn. Finally, a second ball is drawn. a. What is the probability that the second ball drawn is white? b. if the second ball drawn is white, what is the probability that the first ball drawn was red?
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.
My question is about finding the answer to b.
Why is drawing a red first not independent of the second draw being a white ball?
So, to me, the answer should be 3/5 no matter what ball color the second draw is. Why is that wrong?
I can sort of understand why you find the
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