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auto accident

by delhiboy1979 » Mon Mar 30, 2009 1:52 am
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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by moorthy76 » Mon Mar 30, 2009 9:18 am
is it B?
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Surya
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Answer

by ashaydesai » Mon Mar 30, 2009 10:42 am
IMO A
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Answer

by ashaydesai » Mon Mar 30, 2009 10:44 am
IMO A
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Re: auto accident

by sg1928 » Mon Mar 30, 2009 11:44 am
delhiboy1979 wrote: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.
Can someone post an explanation.
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by anshulseth » Mon Mar 30, 2009 11:23 pm
The answer is C.

Here is the logic,
Let Auto accident victims in survey be X.

Let Severely injured driver and front passengers be Y.
So, 4/5 Y were not wearing seat belts at time of accident.

Conclusion is, wearing seat belt will reduce the no.
Which no: Y.

So, what can prove 4/5 Y is a big no. in the survey, is if Y is a big no.
Y can be big if Y/X is high, which can only be if Y is a large proportion in X, as compared to others in X.
Others in X are rear passengers.

So, C says that in X, Yi.e. drivers and front passengers are more than rear passengers. So Y/X is high.

Hence, proved.
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by delhiboy1979 » Tue Mar 31, 2009 9:47 pm
Well, I too had selected C, however the OA is A. Apologies I do not have the OE.
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by ketkoag » Wed Apr 01, 2009 3:36 am
By POE, i got A as the answer as it is the best among all.
I did it with the help of logical negation that means if 80percent were wearing the seat belts then we do not know about the rest 20 %.
Now A gives the data for 20% and thus supports the conclusion hence the best answer.
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by delhiboy1979 » Wed Apr 01, 2009 10:35 pm
The stimulus already states that 80% were not wearing seat belts, how can MORE than 20% be wearing seat belts.
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by kris77 » Fri May 13, 2016 10:39 pm
I think A is the right answer here.
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