According to a study, 50 % of adult smokers started smoking before 21 years old. 8 smokers 21 years old or older are randomly selected, and the number of smokers who started smoking before 21 is recorded. Show your work. 1. The probability that at least 6 of them started smoking before 21 years of age is 2. The probability that at most 7 of them started smoking before 21 years of age is 3. The probability that exactly 3 of them started smoking before 21 years of age is
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.
According to a study, 50 % of adult smokers started smoking before 21 years old. 8 smokers 21 years old or older are randomly selected, and the number of smokers who started smoking before 21 is recorded. Show your work.
1. The probability that at least 6 of them started smoking before 21 years of age is
2. The probability that at most 7 of them started smoking before 21 years of age is
3. The probability that exactly 3 of them started smoking before 21 years of age is
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