Twenty batteries have been sitting in a drawer for 2 yr. There are 4 dead batteries among the 20. If three batteries are selected at random, determine the number of ways in whicha. 3 dead batteries can be selected. b. 3 good batteries can be selected. c. 2 good batteries and 1 dead battery can be selected
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.
Twenty batteries have been sitting in a drawer for 2 yr. There are 4 dead batteries among the 20. If three batteries are selected at random, determine the number of ways in which
a. 3 dead batteries can be selected.
b. 3 good batteries can be selected.
c. 2 good batteries and 1 dead battery can be selected
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