Simple Probability

2011-03-05 4:30 pm
一間公司入面,40%員工係女人,所有員工之中一半(50%)係夜更.
問:一個RANDOMLY SELECTED 的員工係女人最大可能的PROB ?
Original version: What is the greatest possible probability that a randomly chosen night shift worker is a woman?


係唔係 0.4(選中女人的可能,最大可以係40%全部都夜更)/0.5(夜更可能)
想知答案,唔知岩唔岩?謝謝

回答 (2)

2011-03-05 7:54 pm
✔ 最佳答案
最大概率 => 所有女人都是夜更。用條件概率

P(女人|夜更)

= P(女人及夜更)/P(夜更)

= 0.4/0.5

= 0.8
2011-03-05 4:34 pm
Yes,you are right.
參考: me~


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