英语翻译An investment firm has classfies its employees according

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 23:24:40

英语翻译
An investment firm has classfies its employees according to their gender(male or female) and the # of dependents(one,two or more than two).The number of employees falling into all three categories are shown in the above table.Question:Find the probability that the employee is a female given that they have more than two dependents.Answer is 275/425请用中文解释下为什么是 275/425 还有 P(A)given B 公式是 P(A/B)=P(A and B)/P(B)

1.275、425是题目给出的一个例子的值,说的是超过两个的male和超过两个的female的数目.2.P(A | B) 是一个条件概率,即B发生的情况下,求A发生的概率.因为P(AB) = P(B)*P(A | B),即事件AB同时发生的概率 = 事件B发生的概率 * 事件B已发生事件A再发生的概率.由P(AB) = P(B)*P(A | B),得P(A | B) = P(AB) / P(B).

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