The results of 8 matches(win,loss or draw) are to be predicted.the number of different forecasts containing exactly 6 correct result is?
回答 (1)
2016-12-11 1:05 pm
X~Bi(n=8 , p = 1/3)
Pr(X=6) = 8C6 (1/3)^6 (2/3)^2 = 0.0171
Pr(X=6) = 8C6 (1/3)^6 (2/3)^2 = 0.0171
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161211045756AA2faXs