GMATPrep2: teenagers and smoking : GMAT Critical Reasoning (CR)
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GMATPrep2: teenagers and smoking

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Manager
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04 Sep 2009, 06:20
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(N/A)

Question Stats:

57% (02:09) correct 43% (00:21) wrong based on 15 sessions

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Could anyone explain me why???????? Will greatly appreciate..

OA
[Reveal] Spoiler:
A
If you have any questions
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Re: GMATPrep2: teenagers and smoking [#permalink]

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04 Sep 2009, 08:23
yes E-weakening--so OUT
D-uses "SOME"--hence OUT
C-"FEW" and not strengthening--OUT
B-out of scope(OOS)

CasperMonday wrote:
Could anyone explain me why???????? Will greatly appreciate..

OA
[Reveal] Spoiler:
A

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Re: GMATPrep2: teenagers and smoking [#permalink]

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04 Sep 2009, 23:09
CasperMonday wrote:
Could anyone explain me why???????? Will greatly appreciate..

OA
[Reveal] Spoiler:
A

E is clearly out of scope..the argument is talking about smoking not the intake of alcohol
C and D are also out of scope......
B mentions that the study did not distinguish b/w the participant who smoked occassionaly and those who were heavy smokers.......this is also out of scope since we are concerend with teenagers who didn't smoked but eventually started smoking, there is no concern of heavy smoking..

Now the right option A says that "Participants who were depressed at the start of the study were no likely to be smokers
after one year than those who where not depressed....in other words it says that if people who were already depressed and quitted smoking after one year then the increase in number of cases of depression is due the teenagers who started smoking......

Thus strengthening the argument........
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Re: GMATPrep2: teenagers and smoking [#permalink]

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05 Sep 2009, 04:04
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This is a cause --> effect problem. The author conclusion is that smoking causes depression.

You can diagram this smoking ----> depression

Now what would weaken the argument ? if the relationship is reversed depression ---> smoking the argument would be weakened.

Option A removes this possibility and therefore strengthens the argument.
This is a common well pattern in critical reasoning that repeats in a lot of problems.

You have here another problem, although is an assumption problem, with the same reasoning

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Re: GMATPrep2: teenagers and smoking [#permalink]

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26 Sep 2009, 06:11
Good Question and thanku for the explanantions
Chose A right away
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Re: GMATPrep2: teenagers and smoking [#permalink]

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28 Sep 2009, 23:19
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where is the question, cannot find...
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Re: GMATPrep2: teenagers and smoking [#permalink]

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20 Nov 2011, 21:02
One question here on (a)

why the Participants who were depressed at the start of the study were compared with those who were not depressed?

Am still confused
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Re: GMATPrep2: teenagers and smoking [#permalink]

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22 Nov 2011, 19:58
I didn't see any premise and stem in this question.
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Re: GMATPrep2: teenagers and smoking   [#permalink] 22 Nov 2011, 19:58
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