Q3 One computer exam center lost partial user profiles. There are three tests which miss the examinee's names. That is, they can not find who took the test. The exam center randomly distributes the three test scores to three users. Define random variable XX the number of user who receives the correct score. 1. Determine the pmf of XX. 2 Find the probability that at least two users receive the correct scores. 3 Calculate the expected value and variance of random variable XX.
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.
Q3 One computer exam center lost partial user profiles. There are three tests which miss the examinee's names. That is, they can not find who took the test. The exam center randomly distributes the three test scores to three users. Define random variable XX the number of user who receives the correct score.
1. Determine the pmf of XX.
2 Find the
3 Calculate the
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