Find all School-related info fast with the new School-Specific MBA Forum

It is currently 20 Aug 2014, 14:36

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Each year, an official estimate of the stock of cod in the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 07 Nov 2009
Posts: 313
Followers: 4

Kudos [?]: 66 [0], given: 20

Each year, an official estimate of the stock of cod in the [#permalink] New post 10 Aug 2010, 05:44
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

79% (02:26) correct 21% (01:16) wrong based on 14 sessions
Each year, an official estimate of the stock of cod in the Grand Banks is announced. This estimate is obtained by averaging two separate estimates of how many cod are available, one based on the number of cod caught by research vessels during a once-yearly sampling of the area and the other on the average number of tons of cod caught by various commercial vessels per unit of fishing effort expended there in the past year—a unit of fishing effort being one kilometer of net set out in the water for one hour. In previous decades, the two estimates usually agreed closely. However, for the last decade the estimate based on commercial tonnage has been increasing markedly, by about the same amount as the sampling-based estimate has been decreasing.

Which one of the following, if true, most helps to account for the growing discrepancy between the estimate based on commercial tonnage and the research-based estimate?
(A) Fishing vessels often exceed their fishing quotas for cod and therefore often underreport the number of tons of cod that they catch.
(B) More survey vessels are now involved in the yearly sampling effort than were involved 10 years ago.
(C) Improvements in technology over the last 10 years have allowed commercial fishing vessels to locate and catch large schools of cod more easily.
(D) Survey vessels count only those cod caught during a 30-day survey period, whereas commercial dishing vessels report all cod caught during the course of a year.
(E) Because of past overfishing of cod, fewer fishing vessels now catch the maximum tonnage of cod each vessel is allowed by law to catch.

I negated C because it says only about the commercial fishing data while nothing has been mentioned about the research fishing data. It might be possible that the Improvements in technology ( Or any other reason ) also helped research vessels to catch large schools of cod.
[Reveal] Spoiler: OA
SVP
SVP
avatar
Joined: 17 Feb 2010
Posts: 1563
Followers: 12

Kudos [?]: 201 [0], given: 6

Re: an official estimate [#permalink] New post 10 Aug 2010, 05:55
I narrowed to A and C but picked A because if commerical fishing vessels underreport the number of tons of cod caught by them then the estimates of stock of cod available will be high. That is why the estimates are high from commercial vessels and the estimates are low from reaserch vessels.

can someone explain why A is incorrect?
Senior Manager
Senior Manager
avatar
Joined: 07 Nov 2009
Posts: 313
Followers: 4

Kudos [?]: 66 [0], given: 20

Re: an official estimate [#permalink] New post 10 Aug 2010, 05:59
@Seekmba ..

We should not assume that the commerical fishing vessels underreport the number of tons of cod caught by them as its not mentioned in option A. Its says Fishing vessels which can be both Research as well as Commercial. Hope this helps.
SVP
SVP
avatar
Joined: 17 Feb 2010
Posts: 1563
Followers: 12

Kudos [?]: 201 [0], given: 6

Re: an official estimate [#permalink] New post 10 Aug 2010, 06:26
thank you rohitgoel15. got it. i didnt read it properly.

a slight loss of attention and we pay the price in gmat....:(
Manager
Manager
avatar
Joined: 07 Apr 2009
Posts: 160
Followers: 2

Kudos [?]: 7 [0], given: 5

GMAT Tests User
Re: an official estimate [#permalink] New post 10 Aug 2010, 06:39
Just reason before you answer, Answer lies in these lines:

the average number of tons of cod caught by various commercial vessels per unit of fishing effort expended there in the past year—a unit of fishing effort being one kilometer of net set out in the water for one hour

Better tech. will inc. the no. of cods caught
Manager
Manager
avatar
Joined: 24 Dec 2009
Posts: 227
Followers: 2

Kudos [?]: 25 [0], given: 3

GMAT Tests User
Re: an official estimate [#permalink] New post 10 Aug 2010, 08:08
Nice question. C seems to be correct.
Director
Director
avatar
Status: Apply - Last Chance
Affiliations: IIT, Purdue, PhD, TauBetaPi
Joined: 17 Jul 2010
Posts: 693
Schools: Wharton, Sloan, Chicago, Haas
WE 1: 8 years in Oil&Gas
Followers: 14

Kudos [?]: 70 [0], given: 15

GMAT Tests User
Re: an official estimate [#permalink] New post 10 Aug 2010, 08:16
What is the OA?

Posted from my mobile device Image
_________________

Consider kudos, they are good for health

Manager
Manager
User avatar
Joined: 11 May 2010
Posts: 226
Followers: 3

Kudos [?]: 28 [0], given: 11

GMAT Tests User
Re: an official estimate [#permalink] New post 11 Aug 2010, 02:04
C it is
Senior Manager
Senior Manager
avatar
Joined: 07 Nov 2009
Posts: 313
Followers: 4

Kudos [?]: 66 [0], given: 20

Re: an official estimate [#permalink] New post 11 Aug 2010, 23:12
@ vageesh thanks for the reply .. Can you please help me understand that what it means?
Manager
Manager
User avatar
Joined: 11 May 2010
Posts: 226
Followers: 3

Kudos [?]: 28 [0], given: 11

GMAT Tests User
Re: an official estimate [#permalink] New post 12 Aug 2010, 07:36
rohitgoel15 wrote:

I negated C because it says only about the commercial fishing data while nothing has been mentioned about the research fishing data. It might be possible that the Improvements in technology ( Or any other reason ) also helped research vessels to catch large schools of cod.


I arrived at C mostly based on POE, C is a big contender for me but does not quite satisfy me, but since every other answers is incorrect, C it is.

C explicitly said that the technology improve the commercial fishing to catch more fish, and since we are looking for the answer that "most helps" to explain the difference, we can entirely assume that only the commercial apply the new technology and the Research doesn't.

With this the discrepancy is explained as:

In the sea: there are 100 cods, before, the commercial catch 50, the research catch 50, now, the commercial catch 70 (+20), due to the lack of cods available, the research could only catch 30 (-20).
Senior Manager
Senior Manager
avatar
Joined: 03 Nov 2005
Posts: 399
Location: Chicago, IL
Followers: 3

Kudos [?]: 25 [0], given: 17

GMAT Tests User
Re: an official estimate [#permalink] New post 12 Aug 2010, 07:49
A is incorrect as this answer choice makes the argument even more confusing than flawless. the fact that commercial vessels catch even more fish than they actually report does not explain why the research vessels catch less. If it were vice versa, so that research vessels underreport instead than thids answer choice would be very close to fill in the logical gap and be a correct answer.
_________________

Hard work is the main determinant of success

Re: an official estimate   [#permalink] 12 Aug 2010, 07:49
    Similar topics Author Replies Last post
Similar
Topics:
14 Experts publish their posts in the topic A certain stock exchange designates each stock with a one-, japped187 6 30 May 2008, 05:19
15 Each year, an official estimate of the stock of cod in the prude_sb 15 12 Mar 2007, 20:14
4 Questions 18-19 Each year, an official estimate of the stock WinWinMBA 4 20 Jun 2005, 10:26
Municipal officials originally estimated that it would be chunjuwu 2 09 Mar 2005, 00:42
9 Each year, an official estimate of the stock of cod in the saurya_s 23 04 Mar 2005, 12:57
Display posts from previous: Sort by

Each year, an official estimate of the stock of cod in the

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| 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®.