The health of two independent groups of 10 persons each is being studied for 6 months. The probability any one individual in either group drops out before the end of the 6 months is 0.2 (independent of the other participants). What is the probability at least 9 persons finish the study in either one of the two groups but not in both groups?
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.
The health of two independent groups of 10 persons each is being studied for 6 months. The
one individual in either group drops out before the end of the 6 months is 0.2 (independent of the other
participants). What is the probability at least 9 persons finish the study in either one of the two groups but
not in both groups?
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