Explain whether the following statements are True, False. or Uncertain

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<P>解释题</P>
<P>Explain whether the following statements are True, False. or Uncertain.</P>
<P></P>
<P>A group(group A) of 10 students sit down at a restaurant for dinner and agree to share costs equally. A different group(group B) of 10 students decide that each student will pay his/her own bill. As a result, the total bill of group B will exceed the total bill of group A.</P>
<P></P>
<P>我觉得是 false 但是原因没想好。各位帮忙看看...</P>
<P align=right><FONT color=#000066>[此贴子已经被作者于2008-11-15 6:17:39编辑过]</FONT></P>

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关键词：Statements statement following Uncertain Statemen statements restaurant following different whether

就是说有AB两组人在饭店吃饭，每组10人.A组人吃饭前就决定大家一起share这顿饭钱（每个人都交最后总数的十分之一）。而B组人决定他们每个人各付各的Go Dutch，（老外吃饭都只交自己的那份，一般都自己吃自己的）。

，所以说最后的账单的总价钱B组的会比A组的多。

问是对，是错？

[此贴子已经被作者于2008-11-15 11:25:12编辑过]

错的

要求解释

Suppose in Group B, where the 10 students decide that each student will pay his/her own bill, everyone order a 10-dollar meal and thus you will pay 10 dollars.  Now, in Group A,if you order a 20-dollar meal, and suppose all others order the 10-dollar meal, then, you will pay 11 dollars to gain a 20-dollar meal.  That is to say, each individual in Group A has an incentive to order a higher valued meal relative to those in Group B.  Therefore, the total bill for Group A will be higher than that for Group B.

So, the answer for this question should be False.

以下是引用toddzhao在2008-11-16 1:40:00的发言：

Suppose in Group B, where the 10 students decide that each student will pay his/her own bill, everyone order a 10-dollar meal and thus you will pay 10 dollars.  Now, in Group A,if you order a 20-dollar meal, and suppose all others order the 10-dollar meal, then, you will pay 11 dollars to gain a 20-dollar meal.  That is to say, each individual in Group A has an incentive to order a higher valued meal relative to those in Group B.  Therefore, the total bill for Group A will be higher than that for Group B.

So, the answer for this question should be False.

Exactly!! Thank you very much! I got it now.

this is our professor's answer, most same as you.

(False.
The total bill of group A will be larger, since each student will consume food until the marginal benefit is equal to one-tenth of the marginal cost, rather than to the point where the marginal benefit is equal to the marginal cost.)

could you tell me how to account for the marginal benefit? I mean the equation. And how to account for the total benefit?

Thank you very much indeed!

A的多吧   我觉得  不要把她想成考试题目   模拟成现实中的情况  各吃各的  自然比较节省  自己掏腰包嘛，而大家一起付钱都唯恐赔本，自然吃得多了

The total bill of group A will be larger, since each student will consume food until the marginal benefit is equal to one-tenth of the marginal cost, rather than to the point where the marginal benefit is equal to the marginal cost.

---------------------------------------------------------

教授的回答很意味深长。  

不免使我想到了公共地悲剧。社会总边际......, 个人边际......

经济学也不乏众多有趣之处......



夜深人静，侧卧床前，昏暗的煤油灯下，随手拿起一本MWG的《Microeconomics Theory》，胡乱翻看着，随便哪一页，只要读到精彩处，两三个小时不知不觉匆匆而过；远处传来公鸡啼叫的声音，恍惚间转身刷新经济学论坛，才发现“微观经济学”栏目早已已空无一人。


喧嚣浮躁的空气中还能有一处属于自己的精神家园，幸哉。


多谈些问题，少当些资料，岂不快哉！

以下是引用google2008在2008-11-18 0:20:00的发言：
The total bill of group A will be larger, since each student will
consume food until the marginal benefit is equal to one-tenth of the
marginal cost, rather than to the point where the marginal benefit is
equal to the marginal cost.

---------------------------------------------------------

教授的回答很意味深长。  

不免使我想到了公共地悲剧。社会总边际......, 个人边际......

经济学也不乏众多有趣之处......



夜深人静，侧卧床前，昏暗的煤油灯下，随手拿起一本MWG的《Microeconomics Theory》，胡乱翻看着，随便哪一页，只要读到精彩处，两三个小时不知不觉匆匆而过；远处传来公鸡啼叫的声音，恍惚间转身刷新经济学论坛，才发现“微观经济学”栏目早已已空无一人。


喧嚣浮躁的空气中还能有一处属于自己的精神家园，幸哉。


多谈些问题，少当些资料，岂不快哉！

哈，兄弟所言即是啊，我也觉得经济学配合实际问题很有意思，哈。