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A population of 50 registered voters contain 30 in favor of Proposition 134 and 20 opposed....

A population of 50 registered voters contain 30 in favor of Proposition 134 and 20 opposed. An opinion survey selects a random sample of 4 voters from this population.

(1) Calculate the probability that there will be no one in favor of Proposition 134 in the sample.

(2) Calculate the probability that the sample contains exactly one pro 134 person.

(3) Calculate the probability that there will be at least one person in favor of Proposition 134 in the sample.

math   Statistics-And-Probability   
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Answer #1

pro po To la number ot ikved volevs So Nou, let x be The numbe ot olevs out o lh randomly scleclEd he,could be repvecnEs on oho are tavD the proposition CNow, he probabillg hat thereil be no one in Hence, o. o2st in he vequired probabilg heve Nbbnat exo he pro boi one pro 3 penon uoill appear in pe ㅅample:Tr;^ would be com puled using 1, e po baら. Cty bino Mial = 0.1536 required probabiltg heve The proba 6 ;し(q at lheve will be at leant one in probability at the ve-I らe no one ia hovoro 0.9구44 eve.

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