The following information is based on independent random samples taken from two normally distributed populations having equal variances: n1 = 15 n2 = 13 sample mean 1 = 50, sample mean 2 = 53 s1 = 5, s2 = 6 Based on the sample information, determine the 90% confidence interval estimate for the difference between the two population means. (use 4 decimal places) Answer: (

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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.