A recent report determined that although only three percent : GMAT Critical Reasoning (CR) - Page 2
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 11 Dec 2016, 02:23
GMAT Club Tests

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A recent report determined that although only three percent

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

11 KUDOS received
SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1603
Followers: 8

Kudos [?]: 236 [11] , given: 0

A recent report determined that although only three percent [#permalink]

Show Tags

New post 01 Jul 2003, 06:02
11
This post received
KUDOS
92
This post was
BOOKMARKED
A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
Expert Post
1 KUDOS received
Verbal Expert
User avatar
Joined: 14 Dec 2013
Posts: 1962
Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
Followers: 308

Kudos [?]: 1275 [1] , given: 20

GMAT ToolKit User Premium Member Reviews Badge
A recent report determined that although only three percent [#permalink]

Show Tags

New post 20 Jul 2016, 14:03
1
This post received
KUDOS
Expert's post
ashutoshsh wrote:
ywilfred wrote:
3% of drivers on maryland highways equip their vehicles with radar detectors
31% of all vehicles ticketed for exceeding the speed limit were equip with them
Drivers who equip their vehicles with radar detectors are more likely to exceed speed lmiit regularly than driver who do not <-- conclusion

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
- does not hold up the conclusion

(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
This one holds up the conclusion. We're told a large percentage of vehicles with radar detectors were ticketed for speeding. Then (B) says those who are ticketed are likely to exceed the speed limit regularly. So the conclusion that vehicles with radar detectors exceed the speed limit regularly is true.

(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
- not important.

(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
- does not help the conclusion

(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
- out of scope



Hey!
Why is option C not important. I agree, the conclusion says that drivers with radar are more likely to exceed speed limit more regularly than drivers who do not. But this conclusion is based on the evidence that only 3% of drivers have radars and 33%of all vehicles ticketed were equipped with radar. From this evidence, the assumed that no. of vehicles that were ticketed for exceeding the speed limit was greater than the n. of vehicles with radar.
Please helpbb


Let us analyze the argument using two intersecting sets:
Vs = ticketed vehicles
Vr = vehicles having radar detectors

Vr = 3%
Vr' = 97%

Vr∩Vs = 33% of Vs
Vr'∩Vs = 67% of Vs

We see that although Vr is very small compared to Vr', Vr∩Vs is much larger compared to Vr'∩Vs. Hence it is concluded that Vr vehicles are more likely to exceed speed limits ( i.e., lie within the intersection of the 2 sets) than Vr' vehicles are.

Now, assumption C: Vs>Vr

Negate this: Vs<Vr, and see if the argument breaks down.

Even if Vs<Vr, the above conclusion may still be valid. It does not matter which set is bigger to arrive at the conclusion. (Try drawing various sizes of Vr and Vs yourself; you would then see the concept more clearly)
Manager
Manager
avatar
Joined: 27 Aug 2004
Posts: 125
Location: US
Followers: 2

Kudos [?]: 3 [0], given: 0

 [#permalink]

Show Tags

New post 01 Sep 2004, 07:06
B.

Only B can be the assumption. All the others does not say how the conclusion - drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not can be arrived.
Senior Manager
Senior Manager
User avatar
Joined: 06 Dec 2003
Posts: 366
Location: India
Followers: 1

Kudos [?]: 11 [0], given: 0

 [#permalink]

Show Tags

New post 01 Sep 2004, 10:38
SigEpUCI, nice explanation dear
We can look at this too:
http://www.gmatclub.com/phpbb/viewtopic ... t=maryland

Dharmin
_________________

Perseverance, Hard Work and self confidence

Director
Director
User avatar
Joined: 01 Feb 2003
Posts: 851
Location: Hyderabad
Followers: 4

Kudos [?]: 96 [0], given: 0

A recent report determined that although only three percent [#permalink]

Show Tags

New post 14 Mar 2005, 23:06
A recent report determined that although only three percent of drivers on Maryland highways equipped their
vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were
equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed
the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed
limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly
than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of
vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the
time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state
highways not covered in the report.
Director
Director
avatar
Joined: 29 Oct 2004
Posts: 863
Followers: 4

Kudos [?]: 195 [0], given: 0

 [#permalink]

Show Tags

New post 15 Mar 2005, 00:10
Manager
Manager
avatar
Joined: 05 May 2005
Posts: 65
Followers: 2

Kudos [?]: 124 [0], given: 0

A recent report determined that although only three percent [#permalink]

Show Tags

New post 06 Aug 2005, 04:36
2
This post was
BOOKMARKED
A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?
A Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
B Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
C The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
D Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
E Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

Please, provide explanations.

OA is a few posts below.

Source – GMATPrep by Pearson VUE

Last edited by Pauline on 06 Aug 2005, 23:23, edited 1 time in total.
Senior Manager
Senior Manager
avatar
Joined: 04 May 2005
Posts: 282
Location: CA, USA
Followers: 1

Kudos [?]: 50 [0], given: 0

 [#permalink]

Show Tags

New post 06 Aug 2005, 18:32
B

From
A recent report determined that although only three percent of drivers
...

to the more general conclusion that: Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed ...

We need to assume that the reported case is happening on a regular basis.

Hence
B Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
Manager
Manager
User avatar
Joined: 31 Aug 2004
Posts: 162
Location: Vancouver, BC, Canada
Followers: 1

Kudos [?]: 11 [0], given: 0

A recent report determined that although only 3% of drivers [#permalink]

Show Tags

New post 14 Sep 2005, 09:49
A recent report determined that although only 3% of drivers on maryland highways equipped their vehicles with radar detectors, 33% of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

a) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.

b) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.

c) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with rdar detectors.

d) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.

e) Drivers on Maryland highways exceded teh speed limit more often than did drivers on other state highways not covered in the report.

Pls share us your answer and explanation. Thanks.
Senior Manager
Senior Manager
avatar
Joined: 29 Nov 2004
Posts: 484
Location: Chicago
Followers: 1

Kudos [?]: 25 [0], given: 0

 [#permalink]

Show Tags

New post 14 Sep 2005, 10:57
B it is, if B is false, then people who exceed speed limit regularly may not get ticket and somebody who exceed speed limit only once gets caught unfortunately, then the argument falls apart.
_________________

Fear Mediocrity, Respect Ignorance

Manager
Manager
User avatar
Joined: 31 Aug 2004
Posts: 162
Location: Vancouver, BC, Canada
Followers: 1

Kudos [?]: 11 [0], given: 0

 [#permalink]

Show Tags

New post 15 Sep 2005, 10:13
The OA is B.

Here is the official explanation.

The conclusion concerns regularly exceeding the speed limit, but the data derive from isolated occasions when drivers exceed the speed limit and are ticketed. The conclusion thus assumes that these instances provice evidence of regular behavior - that drivers ticketed for exceeding the speed limit are likely to be drivers who regularly exceed it. Choice B states this assumption and is the best answer.

Choices A, C, and D provide additional data that might be relevant to the conclusion, but if Choice B is assumed, then additional data are unnecessary for drawing the conclusion. The difference that choice E describes between Maryland and other states would simply suggest that the report's findings cannot be extrapolated to other states. Id does not help in drawing the conclusion.

What I just don't get is the bold line in the explanation. Can someone help me out here?
Manager
Manager
User avatar
Joined: 31 Aug 2004
Posts: 162
Location: Vancouver, BC, Canada
Followers: 1

Kudos [?]: 11 [0], given: 0

A recent report determined that although only 3% of drivers [#permalink]

Show Tags

New post 15 Sep 2005, 10:13
This topic have been merged with: http://gmatclub.com/forum/topic-1378.html
Manager
Manager
User avatar
Joined: 01 Feb 2006
Posts: 100
Followers: 1

Kudos [?]: 0 [0], given: 0

A recent report determined that although only three percent [#permalink]

Show Tags

New post 14 Feb 2006, 14:52
A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
VP
VP
User avatar
Joined: 29 Dec 2005
Posts: 1348
Followers: 10

Kudos [?]: 60 [0], given: 0

Re: CR: Drivers [#permalink]

Show Tags

New post 14 Feb 2006, 18:07
though i am little confused, go with D.

(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
Manager
Manager
User avatar
Joined: 01 Feb 2006
Posts: 100
Followers: 1

Kudos [?]: 0 [0], given: 0

 [#permalink]

Show Tags

New post 16 Feb 2006, 17:15
The conclusion concerns regularly exceeding the speed limit, but the data derive from isolated occasions when drivers exceed the speed limit and are ticketed. The conclusion thus assumes that these instances provide evidence of regular behavior-that drivers ticketed for exceeding the speed limit are likely to be drivers who regularly exceed it. Choice B states this assumption and is the best answer. Choices A, C, and D provide additional data that might be relevant to the conclusion, but if choice B is assumed, the additional data are unnecessary for drawing the conclusion. The difference that choice E describes between Maryland and other states would simply suggest that the report’s findings cannot be extrapolated to other states. It does not help in drawing the conclusion.
Manager
Manager
User avatar
Joined: 08 Feb 2006
Posts: 126
Followers: 1

Kudos [?]: 9 [0], given: 0

A recent report determined that although only 3 percent of [#permalink]

Show Tags

New post 28 Mar 2006, 17:30
A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 perent of all vehicles ticketed for exceeding they speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.


The conclusion drawn above depends on which of the following assumptions?

A. Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.

B. Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.

C. The number of vehicles that were ticketed for exceeding the seed limit was greater than the number of vehicles that were equipped with radar detectors.

D. Many of the vehicles that were ticketed for exceeding the speed limited were ticketed more than once in the time period vovered by the report.

E. Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
Manager
Manager
avatar
Joined: 25 Mar 2006
Posts: 129
Location: Stonybrook Univ
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink]

Show Tags

New post 29 Mar 2006, 18:52
Im going with A.

The conlcusion to the argument is

"drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not."

This relies on the inference that radar detectors would decrease your chances of being caught for speeding.

A. Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.

whats the OA ?
Manager
Manager
User avatar
Joined: 02 Apr 2006
Posts: 93
Followers: 1

Kudos [?]: 34 [0], given: 0

ticketing [#permalink]

Show Tags

New post 23 May 2006, 07:45
A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than
are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for
exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the
speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater
than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed
more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on
other state highways not covered in the report.


You might be familar with this question, but I got a wrong answer on this..

Anybody, some help, pls?~

I will put the OA after seeing some discussion over the answers... Thanks in advance.
Director
Director
avatar
Joined: 24 Oct 2005
Posts: 659
Location: London
Followers: 1

Kudos [?]: 14 [0], given: 0

 [#permalink]

Show Tags

New post 23 May 2006, 08:26
I also got confuse with this. But this is what I have reasoned.

Suppose there are a total of 100 vehicles.
Only 3 had radars. But 33 were caught. so that means it was these people who got caught more than once.

But the author assumes that it will be these same people who will get caught in future also.

As for other choices, they can be eliminated.

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for - this goes against
exceeding the speed limit than are drivers who do not.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater - this does not matter.
than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report. - obvious. nothing to assume
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
- out of scope. Why should other drivers come into picture
Manager
Manager
User avatar
Joined: 29 Sep 2005
Posts: 125
Followers: 1

Kudos [?]: 2 [0], given: 0

 [#permalink]

Show Tags

New post 23 May 2006, 08:36
I would go with D



(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not. [i]-->Likelyhood of ticketing is not discussed[/i]

(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed[i].--If true the conclusion would mean that both types (w and w/o radars) were more likely to exceed the speed limit.[/i]

(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors. [i]--Number of vehicles is out of scope[/i]

(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report. --
[i]"Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than.." To make this claim they would have been ticketed more than once[/i]


(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report. [i]--Out of scope[/i]
Intern
Intern
avatar
Joined: 01 Feb 2006
Posts: 5
Location: Encinitas, CA
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink]

Show Tags

New post 23 May 2006, 08:58
OK, with an assumption type problem we are looking for an answer that the conclusion would fall apart without.

The conclusion is: "drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not."

Which answers support this conclusion directly?

(A) - no, contradicts.
(B) - yes, supports.
(C) - no, weakens.
(D) - no, it's a true statement but does not give any support to the conclusion.
(E) - no, other states are irrelevant.

I'll go with B. Even though B is seemingly obvious, without B the conclusion is weakened. The other answers don't add to or support the conclusion.

--Matt
  [#permalink] 23 May 2006, 08:58

Go to page   Previous    1   2   3   4   5   6   7    Next  [ 129 posts ] 

    Similar topics Author Replies Last post
Similar
Topics:
A recent report determined that although only three percent PUNEETSCHDV 0 13 Jan 2013, 11:54
A recent report determined that although only three percent goalsnr 0 28 May 2012, 02:58
A recent report determined that although only three percent achan 0 09 Feb 2013, 00:35
A recent report determined that although only three percent joyseychow 0 03 Nov 2009, 12:25
A recent report determined that although only three percent Pauline 0 01 Jan 2007, 22:40
Display posts from previous: Sort by

A recent report determined that although only three percent

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.