The accompanying table shows, for credit-card holders with one to three cards, the joint probabilities for the number of cards owned (X) and number of cred purchases made in a week (Y). Complete parts a through c below. Number of Number of Purchases in Week (Y) Cards (X) 2 3 4 1 0.06 0.14 0.08 0.07 0.03 2 0.02 0.08 0.07 0.08 0.07 3 0.01 0.04 0.05 0.08 0.12
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.
For a person in this group who has three cards, what is the probability distribution for number of purchases made in a week?
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