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zlin0222

At a certain university, if 50 percent of the people who inquire about admission policies actually submit applications for admission, what percent of those who submit applications for admission enroll in classes at the university?

(1) Fifteen percent of those who submit applications for admission are accepted at the university.

(2) Eighty percent of those who are accepted send a deposit to the university.

这题是什么意思？谢谢！

eisowl

最讨厌数学题看不懂了。。。唉。。。同问同问

zlin0222

怎么没人回复呀。。。。。急啊急啊

叶子mj

同问

zlin0222

顶起顶起啊~~~~~~~~大家来帮忙~~~~~~~~~

jiajiayyyy

At a certain university, if 50 percent of the people who inquire about admission policies actually submit applications for admission, what percent of those who submit applications for admission enroll in classes at the university?

(1) Fifteen percent of those who submit applications for admission are accepted at the university.

(2) Eighty percent of those who are accepted send a deposit to the university.
这道题好像是xdf蓝皮的吧。以前好像见过。主要是定语从句的问题。我的答案是e。

zlin0222

对啊对啊 是E
这道题到底是什么意思呢？

agnesliu

感觉像是考逻辑，不是考数学~
是不是deposit的人也不一定enroll啊，这样的话就选E

eflet222

不确定对不对,如果send a deposit to the university的人一定会enroll in classes
我选c
E--enroll in classes
S--submit applications
A--accepted at the university

题目要求知道P(E/S)=P(ES)/P(S)=P(E)/P(S)=?
(1)P(A/S)=P(AS)/P(S)=P(A)/P(S)
(2)P(E/A)=P(EA)/P(A)=P(E)/P(A)
显然(1),(2)单独都是不能得到P(E)/P(S)的,但是相乘就可以得到P(E)/P(S)
这里需要一点概率论知识会比较好做

zlin0222

可是这道题答案是E啊、、、