1. A friend of yours shows you a bag with 3 coins in it. The first of the coins is a fair coin, and second is a weighted coin with a probability of 0.6 of coming up heads, and the third coin is a double-sided coin, with both sides being heads. Suppose a coin is selected at random, flipped and comes up heads. a. Construct a tree diagram for this problem scenario. b. What is the probability of obtaining heads?

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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.