CR Critical Help needed : GMAT Critical Reasoning (CR)
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# CR Critical Help needed

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Joined: 17 Sep 2007
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17 Sep 2007, 06:30
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1) Meteorologists say that if only they could design an accurate mathematical model of the atmosphere with all its complexities, they could forecast the weather with real precision. But this is an idle boast, immune to any evaluation, for any inadequate weather forecast would obviously be blamed on imperfections in the model.

Which of the following, if true, could best be used as a basis for arguing against the author's position that the meteorologists' claim cannot be evaluated?
A. Certain unusual configurations of data can serve as the basis for precise weather forecasts even though the exact causal mechanisms are not understood.
B. Most significant gains in the accuracy of the relevant mathematical models are accompanied by clear gains in the precision of weather forecasts.
C. Mathematical models of the meteorological aftermath of such catastrophic events as volcanic eruptions are beginning to be constructed.
D. Modern weather forecasts for as much as a full day ahead are broadly correct about 80 percent of the time.
E. Meteorologists readily concede that the accurate mathematical model they are talking about is not now in their power to construct.

2) In the United States, the Postal Service has a monopoly on first-class mail, but much of what is sent first class could be transmitted electronically. Electronic transmittal operators argue that if the Postal Service were to offer electronic transmission, it would have an unfair advantage, since its electronic transmission service could be subsidized from the profits of the monopoly.

Which of the following, if each is true, would allay the electronic transmittal operators' fears of unfair competition?
A. If the Postal Service were to offer electronic transmission, it could not make a profit on first-class mail.
B. If the Postal Service were to offer electronic transmission, it would have a monopoly on that kind of service.
C. Much of the material that is now sent by first-class mail could be delivered much faster by special package couriers, but is not sent that way because of cost.
D. There is no economy of scale in electronic transmission-that is, the cost per transaction does not go down as more pieces of information are transmitted.
E. Electronic transmission will never be cost-effective for material not sent by first-class mail such as newspapers and bulk mail.

Please explain your choice and any tips for solving a CR. I keep getting the answers wrong.
If you have any questions
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Re: CR Critical Help needed [#permalink]

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17 Sep 2007, 10:22
Well its hard to explain in detail in terms of premise and conclusions. But I will just outline.

GTbuster wrote:
1) Meteorologists say that if only they could design an accurate mathematical model of the atmosphere with all its complexities, they could forecast the weather with real precision. But this is an idle boast, immune to any evaluation, for any inadequate weather forecast would obviously be blamed on imperfections in the model.

Which of the following, if true, could best be used as a basis for arguing against the author's position that the meteorologists' claim cannot be evaluated?

We need something which strenghtens meteorolgists(SM) and weakersn authors(WA) point.
OOS - Out of scope.

A. Certain unusual configurations of data can serve as the basis for precise weather forecasts even though the exact causal mechanisms are not understood. ---May be . But doesnt talk about the model OOS
B. Most significant gains in the accuracy of the relevant mathematical models are accompanied by clear gains in the precision of weather forecasts. -- its SM . Does help meteorolgists
C. Mathematical models of the meteorological aftermath of such catastrophic events as volcanic eruptions are beginning to be constructed. OOS
D. Modern weather forecasts for as much as a full day ahead are broadly correct about 80 percent of the time. -- So what ? OOS
E. Meteorologists readily concede that the accurate mathematical model they are talking about is not now in their power to construct. --again talks of model but not relevant to accuracy of weather prediction

2) In the United States, the Postal Service has a monopoly on first-class mail, but much of what is sent first class could be transmitted electronically. Electronic transmittal operators argue that if the Postal Service were to offer electronic transmission, it would have an unfair advantage, since its electronic transmission service could be subsidized from the profits of the monopoly.

Which of the following, if each is true, would allay the electronic transmittal operators' fears of unfair competition?

See the point "if true" , it can be anything which allays-> comfort Electronic transmittal operators . We have to look for statements such as USPS will not make profit or Electronic transmittal operators will make a lot of profit .

A. If the Postal Service were to offer electronic transmission, it could not make a profit on first-class mail. -- Yep USPS will not make profit
B. If the Postal Service were to offer electronic transmission, it would have a monopoly on that kind of service. --- Worse
C. Much of the material that is now sent by first-class mail could be delivered much faster by special package couriers, but is not sent that way because of cost. --OOS
D. There is no economy of scale in electronic transmission-that is, the cost per transaction does not go down as more pieces of information are transmitted. --OOS
E. Electronic transmission will never be cost-effective for material not sent by first-class mail such as newspapers and bulk mail. --OOS

Please explain your choice and any tips for solving a CR. I keep getting the answers wrong.

Hope that helps.
Re: CR Critical Help needed   [#permalink] 17 Sep 2007, 10:22
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