1000CR-Test-2-Q14 : GMAT Critical Reasoning (CR)
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1000CR-Test-2-Q14

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Joined: 20 Mar 2010
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20 Mar 2010, 12:29
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Hi Guys,

Can i have your views on the answer choices of the below questions? Greatly confused!!!

A recent survey of all auto accident victims in Dole County found that, of the severely injured drivers and front-seat passengers, 80 percent were not wearing seat belts at the time of their accidents. This indicates that, by wearing seat belts, drivers and front-seat passengers can greatly reduce their risk of being severely injured if they are in an auto accident.
The conclusion above is not properly drawn unless which of the following is true?

(A) Of all the drivers and front-seat passengers in the survey, more than 20 percent were wearing seat belts at the time of their accidents.
(B) Considerably more than 20 percent of drivers and front-seat passengers in Dole County always wear seat belts when traveling by car.
(C) More drivers and front-seat passengers in the survey than rear-seat passengers were very severely injured.
(D) More than half of the drivers and front-seat passengers in the survey were not wearing seat belts at the time of their accidents.
(E) Most of the auto accidents reported to police in Dole County do not involve any serious injury.

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If you have any questions
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Joined: 17 Jan 2010
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Schools: UCLA (Anderson) - Class of 2013
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20 Mar 2010, 14:48
aiming800 wrote:
Hi Guys,

Can i have your views on the answer choices of the below questions? Greatly confused!!!

A recent survey of all auto accident victims in Dole County found that, of the severely injured drivers and front-seat passengers, 80 percent were not wearing seat belts at the time of their accidents. This indicates that, by wearing seat belts, drivers and front-seat passengers can greatly reduce their risk of being severely injured if they are in an auto accident.
The conclusion above is not properly drawn unless which of the following is true?

(A) Of all the drivers and front-seat passengers in the survey, more than 20 percent were wearing seat belts at the time of their accidents.
(If the seat belt does not help reducing the risk of being severely injured, then the % of people who were seriously injured without wearing a seatbelt should be 100% - % of seat belt wearers. = % of seat belt non-wearers. This statement tells us that the % of seat belt wearers are under-represented in severe accidents)

(B) Considerably more than 20 percent of drivers and front-seat passengers in Dole County always wear seat belts when traveling by car.
(This is tempting but the people who get in accidents may not be true indication of how the overall drivers are in Dole County)

(C) More drivers and front-seat passengers in the survey than rear-seat passengers were very severely injured.
(Irrelevant)

(D) More than half of the drivers and front-seat passengers in the survey were not wearing seat belts at the time of their accidents.
(60% is more than half but so is 90%)

(E) Most of the auto accidents reported to police in Dole County do not involve any serious injury.
(Irrelevant)

Cheers,

I think A.

edit: dur... I put B as the answer when I clearly explained that A is the answer.
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21 Mar 2010, 22:58
+1 for A.
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My debrief: done-and-dusted-730-q49-v40

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22 Mar 2010, 23:36
I think it's A.
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23 Mar 2010, 11:21
What is the OA?
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My debrief: done-and-dusted-730-q49-v40

Re: 1000CR-Test-2-Q14   [#permalink] 23 Mar 2010, 11:21
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