A true/false test has 20 questions. If a student is simply guessing at the answers, On average, how many questions would a student answer correctly for the entire test? What is the probability that a student would answer more than 15 questions correctly simply by guessing? What is the probability that a student would answer fewer than 7 questions correctly simply by guessing?
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 true/false test has 20 questions. If a student is simply guessing at the answers,
On average, how many questions would a student answer correctly for the entire test?
What is the probability that a student would answer more than 15 questions correctly simply by guessing?
What is the probability that a student would answer fewer than 7 questions correctly simply by guessing?
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