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

It is currently 20 Oct 2014, 14:51

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

A recreational airplane manufacturer's advertisement states,

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 28 Nov 2012
Posts: 48
Followers: 0

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

A recreational airplane manufacturer's advertisement states, [#permalink] New post 26 Jan 2013, 14:33
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

52% (02:12) correct 48% (01:24) wrong based on 190 sessions
Please explain your answer....

A recreational airplane manufacturer's advertisement states, "The National Transportation Safety Board (NTSB) reports that the AZ121 aircraft has the fewest fatalities per crash landing of any aircraft in its class." The advertisement goes on to claim that the AZ121 is one of the safest planes available today.

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

THE NTSB listed many planes in other classes that had more fatalities per crash landing than did the AZ121.

Despite its popularity, the AZ121 is a relatively new aircraft, only having been sold on the market for two years.

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

The rate of fatalities per crash landing of the AZ121 is more than five times lower than the next highest rate of fatalities per crash landing in its class.

The NTSB issues its safety reports on a monthly basis.
[Reveal] Spoiler: OA
1 KUDOS received
Senior Manager
Senior Manager
User avatar
Status: Final Lap
Joined: 25 Oct 2012
Posts: 294
Concentration: General Management, Entrepreneurship
GPA: 3.54
WE: Project Management (Retail Banking)
Followers: 2

Kudos [?]: 104 [1] , given: 85

Re: A Recreation Airplane.... [#permalink] New post 26 Jan 2013, 17:09
1
This post received
KUDOS
skiingforthewknds wrote:
Please explain your answer....

A recreational airplane manufacturer's advertisement states, "The National Transportation Safety Board (NTSB) reports that the AZ121 aircraft has the fewest fatalities per crash landing of any aircraft in its class." The advertisement goes on to claim that the AZ121 is one of the safest planes available today.

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

THE NTSB listed many planes in other classes that had more fatalities per crash landing than did the AZ121.

Despite its popularity, the AZ121 is a relatively new aircraft, only having been sold on the market for two years.

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

The rate of fatalities per crash landing of the AZ121 is more than five times lower than the next highest rate of fatalities per crash landing in its class.

The NTSB issues its safety reports on a monthly basis.


Premise : the recreational AZ121 aircraft has the fewest fatalities per crash landing of any aircraft in its class.
Conclusion : the AZ121 is one of the safest planes available today.
Only C weakens properly the argument since it assimilates recreational aircraft as dangerous aircraft and Thus, makes the argument weak.
_________________

KUDOS is the good manner to help the entire community.

"If you don't change your life, your life will change you"

Expert Post
1 KUDOS received
Veritas Prep GMAT Instructor
User avatar
Joined: 05 Feb 2014
Posts: 4
GMAT 1: 780 Q49 V50
GPA: 3.2
Followers: 1

Kudos [?]: 2 [1] , given: 1

Re: A recreational airplane manufacturer's advertisement states, [#permalink] New post 12 Feb 2014, 14:55
1
This post received
KUDOS
Expert's post
ankur1901 wrote:
i didn't get it.
Conclusion : The advertisement goes on to claim that the AZ121 is one of the safest planes available today.
It only states that its 'One of the safest' plane

Option C states

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

From the premise we have: that number of fatalities /crash is the lowest for AZ121 in its class. So even if number of crash landings are higher fatalities are low as compared to any other planes in its class.
How does it attack the conclusion its one of the safest plane. Even with highest incidence of crash landings, fatalities are low. Doesn't it strengthen the argument?


C weakens by showing a way in which the stat used (lowest fatalities per crash) might not prove that the plane is safe. What if the AZ121 only has 1 fatality per crash, but it crashes on 90% of its flights? You wouldn't call it very safe. It'd be like me saying "I am awesome at quant because I only miss 1 question per practice session". You'd also need to know how many questions I do per session to know if that stat is meaningful.
Manager
Manager
avatar
Status: GMAT Streetfighter!!
Joined: 22 Nov 2012
Posts: 59
Location: United States
Concentration: Healthcare, Finance
GPA: 3.87
Followers: 0

Kudos [?]: 33 [0], given: 21

Re: A Recreation Airplane.... [#permalink] New post 26 Jan 2013, 16:58
Logical leap of faith.

The plane is the safest in its class, so it must be the safest in all classes of planes.

Lets assume that the class that this plane pertains to is also the safest class.

C weakens the assumption, because C states that the class that the plane pertains to is not the safest one.
Intern
Intern
avatar
Joined: 04 May 2013
Posts: 19
Location: Azerbaijan
Concentration: Finance, General Management
GMAT 1: 710 Q49 V38
Followers: 0

Kudos [?]: 4 [0], given: 39

GMAT ToolKit User
Re: A recreational airplane manufacturer's advertisement states, [#permalink] New post 23 May 2013, 23:11
Premise: There is a statistical evidence that if AZ121 crushes then number of fatalities in the crash will be less than number of fatalities in a crash case of another airplane of the same class.
Conclusion: AZ121 is one of the safest airplanes.
Assumption: Definitely, a number of requirements should be assessed to evaluate safety of a plane and the most obvious requirements are: Fatalities per crashes level (how many fatalities for 1000 crashes) and Crashes per flights level (how many crashes for 1000 flights).
We should note, that there is no relation between "Fatalities per crashes" ratio and "Crashes per flights" ratio.

A - the statistics of fatalities per crashes for other class planes evidences that AZ121 plane's fatalities per crashes ratio could compete even with this ratio of other class planes. Since there is no information about crashes per flights in the statement, we can't make conclusion about safety of the plane.
B - it's not interesting for us whether the model is new or not as a new one could be ether perfect in terms of safety or hopelessly bad.
C - there are a lot of crashes per flights in recreational class, so crashes per flights ratio for AZ121 is higher than it's for other planes. The good news is that majority of all crashes (relatively) end without fatalities, but anyway the plane can not be called "safe" - WEAKEN THE ARGUMENT
D - restatement of the premise, no connection with the conclusion of the argument.
E - neutral statement, no connection with the conclusion of the argument.
Current Student
avatar
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1097
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 31

Kudos [?]: 273 [0], given: 67

Re: A recreational airplane manufacturer's advertisement states, [#permalink] New post 23 May 2013, 23:54
skiingforthewknds wrote:
Please explain your answer....

A recreational airplane manufacturer's advertisement states, "The National Transportation Safety Board (NTSB) reports that the AZ121 aircraft has the fewest fatalities per crash landing of any aircraft in its class." The advertisement goes on to claim that the AZ121 is one of the safest planes available today.

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

THE NTSB listed many planes in other classes that had more fatalities per crash landing than did the AZ121.

Despite its popularity, the AZ121 is a relatively new aircraft, only having been sold on the market for two years.

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

The rate of fatalities per crash landing of the AZ121 is more than five times lower than the next highest rate of fatalities per crash landing in its class.

The NTSB issues its safety reports on a monthly basis.


Read the highlighted portion. Author presents statistic about one class of plane and moves to conclude that it is the safest of all the planes. Generalization error. Hence C is the correct answer.

Consider kudos if my post helps!!

Archit
Manager
Manager
avatar
Joined: 23 May 2013
Posts: 128
Followers: 0

Kudos [?]: 28 [0], given: 110

GMAT ToolKit User
Re: A recreational airplane manufacturer's advertisement states, [#permalink] New post 12 Feb 2014, 06:51
i didn't get it.
Conclusion : The advertisement goes on to claim that the AZ121 is one of the safest planes available today.
It only states that its 'One of the safest' plane

Option C states

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

From the premise we have: that number of fatalities /crash is the lowest for AZ121 in its class. So even if number of crash landings are higher fatalities are low as compared to any other planes in its class.
How does it attack the conclusion its one of the safest plane. Even with highest incidence of crash landings, fatalities are low. Doesn't it strengthen the argument?
_________________

“Confidence comes not from always being right but from not fearing to be wrong.”

Current Student
avatar
Joined: 03 May 2013
Posts: 326
Location: India
Concentration: Operations, Human Resources
Schools: ISB '16, IIMA (M)
GPA: 4
WE: Human Resources (Human Resources)
Followers: 0

Kudos [?]: 50 [0], given: 47

Re: A recreational airplane manufacturer's advertisement states, [#permalink] New post 12 Feb 2014, 08:20
skiingforthewknds wrote:
Please explain your answer....

A recreational airplane manufacturer's advertisement states, "The National Transportation Safety Board (NTSB) reports that the AZ121 aircraft has the fewest fatalities per crash landing of any aircraft in its class." The advertisement goes on to claim that the AZ121 is one of the safest planes available today.

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

THE NTSB listed many planes in other classes that had more fatalities per crash landing than did the AZ121.

Despite its popularity, the AZ121 is a relatively new aircraft, only having been sold on the market for two years.

Recreational aircraft are more likely to be involved in crash landings than are other types of airplanes.

The rate of fatalities per crash landing of the AZ121 is more than five times lower than the next highest rate of fatalities per crash landing in its class.

The NTSB issues its safety reports on a monthly basis.

THIS IS A EASY ONE....NSTB SAYS THAT AZ121 HAS FEWER FATALITIES PER CRASH LANDING OF ANY AIRCRAFT OF ITS CLASS, HENCE IT IS THE SAFEST.....
FEWER FATALITIES ONCE CRASHED IS FINE BUT WHAT IF IT KEEPS CRASHING AND ADDING TO ITS TOTAL NUMBER OF FATALITIES...

HENCE C
Manager
Manager
User avatar
Affiliations: CrackVerbal
Joined: 03 Oct 2013
Posts: 175
Location: India
GMAT 1: 780 Q51 V46
Followers: 21

Kudos [?]: 86 [0], given: 2

Re: A Recreation Airplane.... [#permalink] New post 13 Feb 2014, 05:41
jgomey wrote:
Logical leap of faith.

The plane is the safest in its class, so it must be the safest in all classes of planes.

Lets assume that the class that this plane pertains to is also the safest class.

C weakens the assumption, because C states that the class that the plane pertains to is not the safest one.




Indeed,
The argument does a slight of hand by implying that least number of fatalities per crash land = safe
What it fails to let us know is whether the air planes generally crash-land more often than do other airplanes.

If it is found that they do crash land more often, the conclusion - that they are one of the safest- will be broken.

Option C is therefore the appropriate response.
_________________

If you find our response valuable, please encourage us with Kudos!

Live online classes by 99th percentile instructors!
http://gmat.crackverbal.com/gmat-courses/online/gmat-live-course/

Get a FREE profile evaluation from CrackVerbal experts!
http://applications.crackverbal.com/free-resources/profile-evaluation/

Re: A Recreation Airplane....   [#permalink] 13 Feb 2014, 05:41
    Similar topics Author Replies Last post
Similar
Topics:
Airplane manufacturer: I object to your characterization of cipher 5 12 Aug 2009, 02:01
Airplane manufacturer gmatprep09 1 07 Jul 2009, 07:38
Camera manufacturers typically advertise their products by vd 1 27 May 2008, 04:36
1 Airplane manufacturer: I object to your characterization of prasannar 15 02 May 2008, 11:05
Airplane manufacturer: I object to your characterization of joemama142000 7 04 Dec 2005, 20:06
Display posts from previous: Sort by

A recreational airplane manufacturer's advertisement states,

  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®.