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A recent survey of all auto accident victims in Dole County

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Senior Manager
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A recent survey of all auto accident victims in Dole County [#permalink] New post 18 Mar 2007, 19:35
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E

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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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 [#permalink] New post 18 Mar 2007, 22:17
A for me.
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 [#permalink] New post 18 Mar 2007, 22:28
A !
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 [#permalink] New post 19 Mar 2007, 12:48
Another A!
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Re: CR - Drivers [#permalink] New post 19 Mar 2007, 15:57
If 20 percent, or even less, drivers did not wear seat belt, then the conclustion would be reverse. Therefore A is correct.

(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.
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 [#permalink] New post 19 Mar 2007, 16:21
I dont get why it is A.
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 [#permalink] New post 19 Mar 2007, 19:55
One and only A
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 [#permalink] New post 20 Mar 2007, 12:55
(A) makes sense.

Becasue it is saying 20% of all-accidents were wearing seatbelts. But in severe accidents where drivers and front-seat passengers found injured severely without seat-belts is 80%.

Which means, not all accidents were severe.
  [#permalink] 20 Mar 2007, 12:55
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A recent survey of all auto accident victims in Dole County

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