You are expecting two sets of exams- “easy” and “hard”. The probability of getting a hard exam is 0.80. The probability that the first question on the exam will be difficult is 0.90 if the set is “hard” and is 0.15 if the set is “easy. a) What is the probability that the first question on your exam is marked as difficult. b) What is the probability that your exam is hard given that the first question on the exam is marked as difficult?
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.
You are expecting two sets of exams- “easy” and “hard”. The
- a) What is the probability that the first question on your exam is marked as difficult.
- b) What is the probability that your exam is hard given that the first question on the exam is marked as difficult?
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