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Automobile Dealer's Advertisement: The Highway Traffic Safety Institu

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Automobile Dealer's Advertisement: The Highway Traffic Safety Institu [#permalink] New post   21 Jun 2022, 10:28
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Question 1
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32% (01:40) correct 68% (01:42) wrong based on 19 sessions

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Automobile Dealer's Advertisement:

The Highway Traffic Safety Institute reports that the PZ 1000 has the fewest injuries per accident of any car in its class. This shows that the PZ 1000 is one of the safest cars available today.


Which of the following, if true, most seriously weakens the argument in the advertisement?

(A) The Highway Traffic Safety Institute report listed many cars in other classes that had more injuries per accident than did the PZ 1000.
(B) In recent years many more PZ 1000s have been sold than have any other kind of car in its class.
(C) Cars in the class to which the PZ 1000 belongs are more likely to be involved in accidents than are other types of cars.
(D) The difference between the number of injuries per accident for the PZ 1000 and that for other cars in its class is quite pronounced.
(E) The Highway Traffic Safety Institute issues reports only once a year.

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C
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Re: Automobile Dealer's Advertisement: The Highway Traffic Safety Institu [#permalink] New post   24 Jun 2022, 02:30
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As is often the case on GMAT CR, the key to this question lies in the language details.

The conclusion is that "the PZ 1000 is one of the safest cars available today."
The evidence is that "the PZ 1000 has the fewest injuries per accident of any car in its class."

Based on the evidence, the PZ 1000 might be one of the safest cars in its class, but does that necessarily make it one of safest cars available today?

PZ 1000 might be the safest within its class. But if it belongs to a particularly dangerous class, then PZ 1000 still might be more dangerous than most cars in OTHER classes.

Choice (C) tells us that PZ 1000 belongs to a particularly dangerous class, so it is the best answer.

I hope that helps!
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Re: Automobile Dealer's Advertisement: The Highway Traffic Safety Institu [#permalink] New post   17 Jul 2022, 03:18
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The comparison is within its class. So if other cars did worse, comparatively 1000PZ will do good. But that doesn't indicate that it's the safest. So C is correct.
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Re: Automobile Dealer's Advertisement: The Highway Traffic Safety Institu [#permalink] New post   17 Jul 2022, 04:28
The Highway Traffic Safety Institute reports that the PZ 1000 has the fewest injuries per accident of any car in its class. This shows that the PZ 1000 is one of the safest cars available today.

How can "C" be possible?

Cars in the class to which the PZ 1000 belongs are more likely to be involved in accidents than are other types of cars.

Class A to which PZ 1000 belongs: having vast number of accident suppose 1000 per years, and the number of injuries is 250 with in Class. Thus, probability of safety is (1/4)
Class B to which PZ 1000 doesn't belong: Less accident per year and injuries are greater; suppose 250 injuries per 500 accident. (1/2) chances of injury.

My argument: If PZ 1000 will belong to Class B; then obviously due to less numbers of accident, the numbers of injuries would also be less.

My Conclusion is: Choice "C" strengthen the argument rather weak.
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Re: Automobile Dealer's Advertisement: The Highway Traffic Safety Institu [#permalink]
17 Jul 2022, 04:28
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