marginal utility curve和indifference curve有关系吗?关系是什么样的?

Q1:Suppose X and Y are independent events with marginal probabilities of 0.47 and 0.87 respectively.What is the probability that either event occurs?( 3 decimal places )
Q2：A Melbourne real estate agent lists two houses for lease in the same street,one built of brick and the other of timber.The agent estimates that the probability of being leased within one week is 0.69 for the brick and 0.68 for the timber house,and the probability of both being leased within one week is 0.52.If the timber house is leased within one week,what is the probability that the brick house is also leased within one week?Give your answer correct to three decimal places.

翻译,统计学英语 Estimate marginal means 高分悬赏
请准确翻译在统计学中术语
Estimate marginal means
一个数学统计学术语，翻译成汉语，请翻译成准确的统计学术语，谢谢。原句是Estimate marginal means for time.

Russia and Brazil are marginal economies (which are ) supported by high prices of natural resource
为什么这句中的which are 可以省略?

3) My ratio of the marginal utility of coffee to the marginal utility of doughnuts is four. This im
3) My ratio of the marginal utility of coffee to the
marginal utility of doughnuts is four. This implies that
A) I always eat doughnuts with my coffee
B) a cup of coffee is four times less valuable to me than a doughnut
C) a cup of coffee is four times more valuable to me than a
doughnut
D) The price ratio is four to one
请给出理由,重点是C选项对或错在哪儿.谢谢

英语翻译
MARGINAL-COST PRICING IN AMERICAN UTILITIES:A COMMENT
SouthernEconomicJournal,Vol.33,No.3.(Jan.,1967),pp.419-420
Professor Shepherd's article1 represents a real contribution to the literature relating to marginal-cost pricing in the utility industry.In the interests of further extending its usefulness,I would like to offer a few comments：
1.Professor Shepherd twice (pp.62 and 64) refers to space heating as a possible "on-peak" use,a statement which causes him to express concern about promotional space heating rates.But it is my understanding that such rates have been instituted only after the utilities involved have satisfied themselves of the probability of the prospective maintenance of the summer peaks they now face.The importance of the off-peak nature of services being offered at promotional rates is considerable.For example,Public Service Electric and Gas Company of New Jersey,one of Professor Shepherd's "extensive" employ-ers of "explicit marginalist pricing" (p.63),has described the basis of its space heating rate as follows:"In our sales promotion programs we are stressing the sale of 'off- peak loads,' such as electric heating,to increase the winter use of electricity thus helping to offset the summer air conditioning peak; and gas air conditioning and interruptible gas service to induce greater use of gas in the off-peak summer period." This is not to deny the existence of a problem in predicting peaks.Peak shifting may occur either as a direct (over-) response to the promotional rate or as a result of a change in the structure of demand over time.While the former might be more embarrassing to the company which would subsequently have to re-file its rates,the economic problem created by both forms of possible peak-shifting is a function of a prior determination concerning the relevant time horizon.Suppose that a company promotes electric space heating and,ten years later,this develops nto peak business.Is it not better to have had efficient utilization of capacity during that decade,even though rates would have to be changed at its conclusion,than to have had a higher-cost operation for the entire period?

英语翻译
The rate of saving multiplied by the marginalutility of money should always be equal to the amount by which the total net rate of enjoyment of utility falls short of the maximum possible rate of enjoyment.

宏观经济问题,成本曲线
Suppose
the marginal cost of two plants of a firm areMC1= 5
+ 2y1andMC2= 40
+y2
(1)
How should the output be divided if the total output is 25?
(2)
What is the firm’s marginal cost curve?

英语翻译
A marginal amount of a particular variable is the increment in that variable induced by a change in another variable on which it depends
这句该怎么翻译?

Use the concept of marginal utility to explain the following:
Usethe concept of marginal utility to explain the following: Newspaper vendingmachines are designed so that once you have paid for one paper, you could takemore than one paper at a time. But soda vending machines, once you have paidfor one soda, dispense only one soda at a time.
用边界效应的知识解答：报纸贩卖机,买一份,你可以免费多领一份；但是苏打水你付了一听的钱,就只能获得一听

用英语解释三个经济学名词
1.Marginal utility ,marginal cost ,and marginal revenue 2.Price elasticity of demand ,Elastic and inelastic goods (market)
3.Lorenz curve and Gini index

全英的微观经济学题目!
marginal revenue :16
marginal cost:13
economic profit = 16 or
但是答案是16!1

1.__________ refers to the transformation of marginal lands into near-desert conditions that CANNOT be used for agriculture.
A.Biological magnification
B.Desertification
C.Deforestation
D.Eutrophication
2.Which of the following is a nonrenewable energy source?
A.geothermal energy
B.biomass fuels
C.hydroelectric power
D.coal
3.Currently,solar power contributes __________ of the world's energy needs.
A.less than 1%
B.5%
C.10%
D.25%
4.Which of the following is an effect of urbanization?
A.reduced carbon emissions compared to rural areas
B.reduced biodiversity of animal populations
C.increased biodiversity of plant populations
D.fewer invasive and exotic plants

为什么 这里MC=MR?Profit maximisation Marginal cost (MC) can be used together with marginal revenue
用中文

英语翻译
Diminishing Marginal Value:The maximum one is willing to sacrifice at the
margin for a good,per unit of time,declines the more one has of that good —
other things held constant.
而是准确些的翻译

marginal utility/ price what does the ratio of MU to P for a produce mean?

微观经济学边际效益
Purchasing goods such that the ratio of marginal utility to price is equal across all goods results in the
(2.50 points)
a.greatest total utility.
b.lowest expenditure on goods.
c.greatest average utility.
d.greatest expenditure on goods.
e.expenditures for all goods being the same.

英语翻译
the Institute rates vehicles good,acceptable,marginal,or poor based on performance in high-speed front and side crash tests,a rollover test,plus evaluations of seat/head restraints for protection against neck injuries in rear impacts.To earn Top Safety Pick for 2010 a vehicle must have good ratings in all four Institute tests.In addition,the winning vehicles must offer electronic stability control.