A quiz assignment of 150 questions, each question with 5 possible answers, was given to a student of which only 1 answer is correct. The student knows answers of 80 questions. What is the approximate probability that a student with no knowledge of the remaining questions, yields between 20 to 23 correct answers from his sheer guess work? b)Assume 50 more questions are added in the assignment. How would the answer to part (i) be affected, if the student knew the answers to all the additional questions.
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.
a) A quiz assignment of 150 questions, each question with 5 possible answers, was given to a student of which only 1 answer is correct. The student knows answers of 80 questions. What is the approximate probability that a student with no knowledge of the remaining questions, yields between 20 to 23 correct answers from his sheer guess work?
b)Assume 50 more questions are added in the assignment. How would the answer to part (i) be affected, if the student knew the answers to all the additional questions.
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