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A recent survey of all auto accident victims in Dole County [#permalink]
 09 Mar 2011, 20:09
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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Re: A recent survey of all auto accident victims in Dole County [#permalink]
09 Mar 2011, 23:13
I've seen this problem in the OG before but I was not entirely convinced of the answer given there myself...
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Re: A recent survey of all auto accident victims in Dole County [#permalink]
09 Mar 2011, 23:18
I thought the answer was C.
The official answer is A according to OP. Think about what A says though - if "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." is true then this number could be anything over 20%...80% even, this is clearly not true according to the stem.
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Re: A recent survey of all auto accident victims in Dole County
[#permalink]
09 Mar 2011, 23:18
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