A multiple-choice test has 100 questions and 4 choices for each question. If a student is totally unprepared and guesses on each question, the mean is the number of questions she can expect to answer correctly. How many questions can she expect to answer correctly
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.
6. A multiple-choice test has 100 questions and 4 choices for each question. If a student is totally unprepared and guesses on each question, the mean is the number of questions she can expect to answer correctly. How many questions can she expect to answer correctly?
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