In hypothesis testing, which of the following/s is/are true? a. a type Il error must occur whenever the null hypothesis can not be rejected O b. B = 1 - a O c. rejecting the null might lead to a type II error O d. B and a decreases at the same time if we increase the sample size O e. A test result might include both type I and type Il errors at the same time

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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.