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

It is currently 30 Sep 2014, 20:09

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

3) In 1986, the city of Los Diablos had 20 days on which air

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 15 Nov 2006
Posts: 223
Location: Ohio
Followers: 1

Kudos [?]: 12 [0], given: 0

3) In 1986, the city of Los Diablos had 20 days on which air [#permalink] New post 23 Mar 2007, 14:13
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
3) In 1986, the city of Los Diablos had 20 days on which air pollution reached unhealthful amounts and a smog alert was put into effect. In early 1987, new air pollution control measures were enacted, but the city had smog alerts on 31 days that year and on 39 days the following year. In 1989, however, the number of smog alerts in Los Diablos dropped to sixteen. The main air pollutants in Los Diablos are ozone and carbon monoxide, and since 1986 the levels of both have been monitored by gas spectrography.
Which of the following statements, assuming that each is true, would be LEAST helpful in explaining the air pollution levels in Los Diablos between 1986 and 1989?
(A) The 1987 air pollution control measures enacted in Los Diablos were put into effect in November of 1988.
(B) In December of 1988 a new and far more accurate gas spectrometer was invented.
(C) In February of 1989, the Pollution Control Board of Los Diablos revised the scale used to determine the amount of air pollution considered unhealthful.
(D) In 1988 the mayor of Los Diablos was found to have accepted large campaign donations from local industries and to have exempted those same industries from air pollution control measures.
(E) Excess ozone and carbon monoxide require a minimum of two years to break down naturally in the atmosphere above a given area.

OA is B. I went for D. What is wrong with D?? It actually contradicts with the conclusion of the arguement.
Senior Manager
Senior Manager
avatar
Joined: 11 Feb 2007
Posts: 360
Followers: 1

Kudos [?]: 21 [0], given: 0

 [#permalink] New post 23 Mar 2007, 17:06
I think in B, it is unclear whether the measured smog alert days prior to the invention of the new spectrometer were simply inaccurate because they were measured using a less accurate spectrometer. Both old and new spectrometers could be accurate enough to measure smog days correctly and enhanced accuracy may affect other aspects more....

In D, although the new air pollution control measures were in enacted in 1987, even greater number of days (39) had smog alerts in 1988 because the mayor exempted those industries from air pollution control measures and those industries were free to produce more pollution. This could perhaps explain why despite the new measures, smog days increased in number in 1988.

What is the conclusion of the argument?
  [#permalink] 23 Mar 2007, 17:06
    Similar topics Author Replies Last post
Similar
Topics:
In 1986, the city of Los Diablos had 20 days on which air ywilfred 8 05 Sep 2005, 07:43
In 1986, the city of Los Diablos had 20 days on which air cybera 9 14 Jul 2005, 13:51
In 1986, the city of Los Diablos had 20 days on which air mbamantra 13 26 Apr 2005, 07:31
In 1986, the city of Los Diablos had 20 days on which air karun_aggarwal 0 09 Apr 2005, 15:07
In 1986, the city of Los Diablos had 20 days on which air doggita 14 24 Oct 2004, 16:16
Display posts from previous: Sort by

3) In 1986, the city of Los Diablos had 20 days on which air

  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®.