ritula 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.
OK, let's make this one rain.
Conclusion: By wearing seat belts,drivers and front-seat passengers can reduce their risk of being severely injured
Premise: A survey of all auto accident victims found that, of the severely injured drivers and front-seat passengers, 80 percent were not wearing seat belts at the time of their accidents
So what do we have here? The survey stated that 80% of the injured were not wearing seat belts, so that means that we need to show that there was some percentage that were in fact wearing seat belts.
OK let's see what we've got here
(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
.I like this one. This is very similar to what I was looking for.(B) Considerably more than 20 percent of drivers and front-seat passengers in Dole County always wear seat belts when traveling by car>>
Always wear? Well, we don't really need this information we need to know about the ones being injured. So out you go(C) More drivers and front-seat passengers in the survey than rear-seat passengers were very severely injured --->
Unessessary distinction here. Cleraly out(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--->
More than half were not wearing seatbelts, Could be. I'll leave it in.(E) Most of the auto accidents reported to police in Dole County do not involve any serious injury.[/quote]>>
Irrelevant. OutBetween A and D now.
A says that of all the the D and P >20% were wearing seatbelts
D says that of all the D and P >50% were NOT wearing setabelts.
Premise says that 80% of the injured.
I'm going with A on this one, it fits the argument better
Hence(A)
Hope it helps
Cheers!
J