PZ 1000 - safest- REALLY ??? - The Beat The GMAT Forum - Expert GMAT Help & MBA Admissions Advice

PZ 1000 - safest- REALLY ???

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bhumika.k.shah: Legendary Member; Posts: 941; Joined: Sun Dec 27, 2009 12:28 amFollowed by: 1 member; Thanked: 20 times

by bhumika.k.shah » Thu Feb 04, 2010 1:02 am

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 1000's 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

I chose E ...Reasoning : if the report is issued only once a year , PZ would've been the safest cars @ that time . I laid more stress on the word today . Hence i chose E

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Source: Beat The GMAT — Critical Reasoning | Thu Feb 04, 2010 1:02 am

vijay_venky: Master | Next Rank: 500 Posts; Posts: 173; Joined: Tue Jul 07, 2009 11:18 pm; Location: Hyderabad; Thanked: 12 times

by vijay_venky » Thu Feb 04, 2010 3:26 am

I think the comparison among the different classes comes in to account when we are talking about the safest cars available today. So we need to be sure that it is comparable safe with the other best cars from other classes.

conclusion: PZ1000 one of the safest available TODAY

premises leading to the conclusion
HTSI reports that PZ1000 has fewest injuries per accident in its class.

Now how does a specific premise lead to a generic conclusion? IMO C is the answer.

Definitely as cited in the previous post, the "TODAY" would have come in to picture had the tense been past for report.
But "reports" is in simple present which obviates the need to think about the frequency of the report.

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bhumika.k.shah: Legendary Member; Posts: 941; Joined: Sun Dec 27, 2009 12:28 amFollowed by: 1 member; Thanked: 20 times

by bhumika.k.shah » Thu Feb 04, 2010 6:58 am

vijay_venky wrote: Definitely as cited in the previous post, the "TODAY" would have come in to picture had the tense been past for report.But "reports" is in simple present which obviates the need to think about the frequency of the report.

So while we are doing CR we need to be sure of SC also..?? :-S

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bhumika.k.shah: Legendary Member; Posts: 941; Joined: Sun Dec 27, 2009 12:28 amFollowed by: 1 member; Thanked: 20 times

by bhumika.k.shah » Thu Feb 04, 2010 7:01 am

There were sooo many words that i thought would provide me some useful like in the same class , today and so on...
but i chose TODAY

how can one say the key words are in the same class instead of today?

since there is a statement which undermines the argument with the key word today in it

How to prioritize in this case???

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ironsferri: Senior | Next Rank: 100 Posts; Posts: 40; Joined: Sat Jul 18, 2009 1:11 pm; Thanked: 4 times; GMAT Score:640

by ironsferri » Sun May 30, 2010 11:33 am

Question:

if B would have said that PZ1000 was the best selling car (of all cars, not just of its class), would this underminde the conclusion?

More PZ1000 = More chances of accidents.

Please let me know if in this "revised version" , B would be considered correct

THANKS!

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paes: Legendary Member; Posts: 995; Joined: Tue Apr 13, 2010 11:56 pmFollowed by: 1 member; Thanked: 31 times

by paes » Mon May 31, 2010 12:18 am

IMO C

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Gyan: Junior | Next Rank: 30 Posts; Posts: 21; Joined: Wed Aug 12, 2009 2:32 am; Location: India; Thanked: 1 times

by Gyan » Mon May 31, 2010 12:47 am

Premise:-Report- PZ 1000 has lowest injuries per accident than any car in its class.
Conclusion:-PZ 1000 safest car available today.( Best in class means Best in Population.)
Assumption:- The representative class of cars against which PZ 1000 comes out to be lowest represent the whole car population.
A) The Highway Traffic Safety Institute report listed many cars in other classes that had more injuries per accident than did the PZ 1000. Incorrect-It actually strengthens the argument.
(B) In recent years many more PZ 1000's have been sold than have any other kind of car in its class. Incorrect-It sells more and it doesn't indicate its safety.
(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. Correct-The word to be seen is the class is more likely to be involved in accidents. So there could be more safe cars who would be in class which are less likely to be involved in accidents. Hence this statement weakens the argument. This statement will make the author to reconsider his assumption and conclusion. And he would conclude that PZ 1000 would be the safest car in its class.

(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. Incorrect-out of scope.
(E) The Highway Traffic Safety Institute issues reports only once a year. Incorrect-frequency of issuance of reports does not have any bearing on the safety.

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jube: Master | Next Rank: 500 Posts; Posts: 186; Joined: Fri May 28, 2010 1:05 am; Thanked: 11 times

by jube » Mon May 31, 2010 1:25 am

The argument is that PZ is one of the safest cars since it has the least injuries of all the cars in its *own class*.

Now if the class itself has something which would call into question the safety of the car that would weaken the argument the most. Hence, C

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gmatmachoman: Legendary Member; Posts: 2326; Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members; Thanked: 173 times; GMAT Score:710

by gmatmachoman » Mon May 31, 2010 1:27 am

Gyan wrote:Premise:-Report- PZ 1000 has lowest injuries per accident than any car in its class.
Conclusion:-PZ 1000 safest car available today.( Best in class means Best in Population.)
Assumption:- The representative class of cars against which PZ 1000 comes out to be lowest represent the whole car population.
A) The Highway Traffic Safety Institute report listed many cars in other classes that had more injuries per accident than did the PZ 1000. Incorrect-It actually strengthens the argument.
(B) In recent years many more PZ 1000's have been sold than have any other kind of car in its class. Incorrect-It sells more and it doesn't indicate its safety.
(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. Correct-The word to be seen is the class is more likely to be involved in accidents. So there could be more safe cars who would be in class which are less likely to be involved in accidents. Hence this statement weakens the argument. This statement will make the author to reconsider his assumption and conclusion. And he would conclude that PZ 1000 would be the safest car in its class.

(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. Incorrect-out of scope.
(E) The Highway Traffic Safety Institute issues reports only once a year. Incorrect-frequency of issuance of reports does not have any bearing on the safety.

Bhai,

I liked ur reasoning. But , I wish u kindly follow the forum rules. I am not doubting ur reasoning capabilities. But the way you underlined makes thing very "shabby".

Plz work on that!

R&D on GMAT algorithm:

https://www.beatthegmat.com/r-d-on-gmat- ... tml#305739

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SmarpanGamt: Master | Next Rank: 500 Posts; Posts: 203; Joined: Mon Mar 08, 2010 2:08 am; Thanked: 6 times

by SmarpanGamt » Mon May 31, 2010 10:31 am

bhumika.k.shah wrote: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?
I attempted this question by ellimination method
(A) The Highway Traffic Safety Institute report listed many cars in other classes that had more injuries per accident than did the PZ 1000 ( option Support the argument )

(B) In recent years many more PZ 1000's have been sold than have any other kind of car in its class ( Irrelavant)

(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 ( weaken )

(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 ( This option is opposite but does not weaken)

(E) The Highway Traffic Safety Institute issues reports only once a year ( Irr'vant)

But this is really amusing to see SC and CR issues in one stimulus.

I chose E ...Reasoning : if the report is issued only once a year , PZ would've been the safest cars @ that time . I laid more stress on the word today . Hence i chose E

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diebeatsthegmat: Legendary Member; Posts: 1119; Joined: Fri May 07, 2010 8:50 amFollowed by: 3 members; Thanked: 29 times

by diebeatsthegmat » Tue Jun 01, 2010 11:54 pm

bhumika.k.shah wrote: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 1000's 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

I chose E ...Reasoning : if the report is issued only once a year , PZ would've been the safest cars @ that time . I laid more stress on the word today . Hence i chose E

hi,
i think how many time in a year the highway traffic safety institute issues reports is not relevant here.
the OA should be C for this question, i think.
the conclusion of the argument says that " car PZ1000 is the safest among cars of its class and C claim "Cars in the class to which the PZ 1000 belongs are more likely to be involved in accidents than are other types of cars" . clearly that it itself weaken the conclusion!

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