A clinical trial is conducted  to evaluate the effectiveness of a new drug to treat severe asthma.  A total of n=300 patients agree to participate and are randomly assigned to receive either the new drug or a placebo and followed for 6 months.   Among 150 patients receiving the new drug, 98 suffered no asthma attacks in the last 3 months of the study, and among 150 patients receiving the placebo, 74 suffered no asthma attacks in the last 3 months of the study.  Construct a 99% confidence interval for the difference in proportions of patients who experienced no asthma attacks.                                            Can you solve this question with EXCEL, if so please provide details.

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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.