For the past years, 20% of the babies were delivered through cesarean section. The research group randomly inspects the medical records of 144 births and finds that 25 of births were by cesarean section. Can the researcher group conclude that the percent of births by cesarean section has decreased at 5% level of significance?
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 the past years, 20% of the babies were delivered through cesarean section. The research group randomly inspects the medical records of 144 births and finds that 25 of births were by cesarean section. Can the researcher group conclude that the percent of births by cesarean section has decreased at 5% level of significance?
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