STATS 250 Lecture Notes - Lecture 4: Probability Distribution, Normal Distribution, Standard Score
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STATS 250 Full Course Notes
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Discrete random variable is also called a binomial. There are the conditions that an experiment needs to fulfill to be considered a binomial experiment. The number of toys we had was a table of probability with a basic discrete variable. Outcomes are independent, which often occurs with random samples. Now we will go through some examples: observe sex of next 50 children born at a local hospital and count the number of girls. So x, our variable, is the number of girls. Yes, it is reasonable that the birth of one girl won"t influence the birth of another. Probability for success should be the same for everyone (is detonated by a smaller case p): expected to be about 0. 5. So this can be a binomial variable: ten question quiz with 5 t/r and 5 multiple choice. Student randomly picks an answer for each question. Yes since we are picking the answers randomly.
