BUSI 1450U Midterm: Statistics Midterm 2 Notes

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26 Apr 2013
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Binomial distribution special case of discrete probability distribution. The word binomial is derived from bi for two and nominal for numbers , suggesting a reference to trials (such as coin fillips) that have only two possible values or numbers that could result. A success denotes the occurrence of an outcome in which we are interested, such as tossing a head, and a. A binomial distribution can also be called a trial (sometimes called a bernoulli trial), since a trail is a 2 possible outcome random experiment of the sort described above. Each unique sequence of outcomes for all of the trials combined may define one possible outcome for the overall experiment. Binomial experiment an experiment such as the two coin flips, that consists of a sequence of identical and independent bernoulli trials. Binomial random variable a variable that counts the number of successes (regardless of exact sequence) among the trial results in the binomial experiment.