A student takes a true-false test that has 12 questions and guesses randomly at each answer. Let X be the number of questions answered correctly. Find P(X=5) Group of answer choices 0.1208 0.2256 0.1934 0.0002
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.
In this case, we can use the binomial distribution
Therefore, the binomial distribution is given by,
Therefore,
n=12
x=5
p=0.5 (We can take p is 0.5 for true or false questions)
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