A student takes a multiple-choice test that has 7questions. Each question has five choices. The student guesses randomly at each answer. Let X be the number of questions answered correctly. (a) Find P4 (b) Find PMore than 2 My question is this: how do we find the propability of answering questions correctly? Each question has five choices so the probability that a student guesses at each answer correctly is 0.2 how did we find .2? the rest of the problem i understand, its how we got the .2 propability that is tripping me up.
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.
Take a guess: A student takes a multiple-choice test that has
My question is this: how do we find the propability of answering questions correctly? Each question has five choices so the
the rest of the problem i understand, its how we got the .2 propability that is tripping me up.
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