It is currently 24 Feb 2018, 10:08

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

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Roland: The alarming fact is that 90 percent of the-OG10#139

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

Hide Tags

17 KUDOS received
Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 595
Roland: The alarming fact is that 90 percent of the-OG10#139 [#permalink]

Show Tags

New post 09 Sep 2004, 13:36
17
This post received
KUDOS
60
This post was
BOOKMARKED
Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.

Sharon: But a normal, moderate level of unemployment is 5 percent, with 1 out of 20 workers unemployed. So at any given time if a person knows approximately 50 workers, 1 or more will very likely be unemployed.

Sharon's argument relies on the assumption that

(A) normal levels of unemployment are rarely exceeded
(B) unemployment is not normally concentrated in geographically isolated segments of the population
(C) the number of people who each know someone who is unemployed is always higher than 90% of the population
(D) Roland is not consciously distorting the statistics he presents
(E) knowledge that a personal acquaintance is unemployed generates more fear of losing one's job than does knowledge of unemployment statistics

Note: There is another question (conclusion question) which is based upon the same argument. For reading and further discussion on that question, please use the following link:
roland-the-alarming-fact-is-that-90-percent-of-the-og10-8416.html
Director
Director
User avatar
Joined: 04 Jan 2008
Posts: 893
Re: Unemployment statistics [#permalink]

Show Tags

New post 15 Mar 2009, 07:05
Thanks...
I always like yr Logic and the way you tackle "all options" :)
+1 to you
Technext wrote:
Roland:
I too go for option 2.


Regards,
Technext

_________________

http://gmatclub.com/forum/math-polygons-87336.html
http://gmatclub.com/forum/competition-for-the-best-gmat-error-log-template-86232.html

1 KUDOS received
Manager
Manager
avatar
Joined: 05 Dec 2009
Posts: 126
Re: Unemployment statistics [#permalink]

Show Tags

New post 13 Mar 2010, 12:32
1
This post received
KUDOS
option 2
Director
Director
User avatar
Joined: 24 Aug 2007
Posts: 923
WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Re: Unemployment statistics [#permalink]

Show Tags

New post 14 May 2010, 00:28
+1 for B.

Even though the explaination given above is great in terms of numerical terms but if someone finds it peculiar then try this:

Sharon says - 5% i.e., one out of 20 workers unemployed. So at any given time if a
person knows approximately 50 workers, one or more will very likely be unemployed.

If you look at the strong reasoning given by her that out of 50, atleast one will be unemployed that means the umemployment is homogeneous in the stated population.

If you still feel the heat, just try the negation test :)
_________________

Want to improve your CR: http://gmatclub.com/forum/cr-methods-an-approach-to-find-the-best-answers-93146.html
Tricky Quant problems: http://gmatclub.com/forum/50-tricky-questions-92834.html
Important Grammer Fundamentals: http://gmatclub.com/forum/key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html

Manager
Manager
avatar
Joined: 16 Feb 2010
Posts: 177
Re: Unemployment statistics [#permalink]

Show Tags

New post 15 May 2010, 03:09
[great explanation Ian thanks
Intern
Intern
avatar
Joined: 24 Apr 2011
Posts: 1
Re: Unemployment statistics [#permalink]

Show Tags

New post 24 Apr 2011, 06:36
Hi,

Roland's statement doesn't seem to contribute anything to the argument. Is it there just to confuse us and complicate the question? I was trying to relate Sharon's conclusion to Roland's statement.

Is such questions can the premise to a conclusion occur in the someone else's statement?

THanks
Senior Manager
Senior Manager
User avatar
Status: 750+ or Burst !
Joined: 01 May 2011
Posts: 384
Location: India
Concentration: General Management, Strategy
GMAT 1: 670 Q48 V35
GPA: 3.5
GMAT ToolKit User
Explanation to OG Question [#permalink]

Show Tags

New post 04 Jun 2011, 04:39
OG 12: CR #71
Can someone explain the reasoning to the OA?

Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.

Sharon: But a normal, moderate level of unemployment is 5 percent, with one out of 20
workers unemployed. So at any given time if a person knows approximately 50 workers, one or more will very likely be unemployed.

Sharon’s argument relies on the assumption that

(A) normal levels of unemployment are rarely exceeded
(B) unemployment is not normally concentrated in geographically isolated segments of the population
(C) the number of people who each know someone who is unemployed is always higher than 90 percent of the population
(D) Roland is not consciously distorting the statistics he presents
(E) knowledge that a personal acquaintance is unemployed generates more fear of losing one’s job than does knowledge of unemployment statistics
_________________

GMAT done - a mediocre score but I still have a lot of grit in me

The last 20 days of my GMAT journey

Expert Post
CEO
CEO
User avatar
B
Joined: 17 Nov 2007
Posts: 3583
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
GMAT ToolKit User Premium Member
Re: Explanation to OG Question [#permalink]

Show Tags

New post 04 Jun 2011, 05:30
Let's deny assumption in B and say we have 20 equal isolated regions with 5% of the total population each. Now, let's assume one of 20 regions has 100% unemployment and others - 0%. If it's true, only 5% people know other people who are unemployed and Sharon’s argument is false.
_________________

HOT! GMAT TOOLKIT 2 (iOS) / GMAT TOOLKIT (Android) - The OFFICIAL GMAT CLUB PREP APP, a must-have app especially if you aim at 700+ | PrepGame

Math Forum Moderator
avatar
Joined: 20 Dec 2010
Posts: 1945
Re: Unemployment statistics [#permalink]

Show Tags

New post 16 Jun 2011, 11:25
IanStewart wrote:
nitindas wrote:
Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.
Sharon: But a normal,moderate level of unemployment is 5 percent,with 1 out of 20 workers unemployed.So at any given time if a person knows approximately 50 workers,1 or more will very likely to be unemployed.

Sharon's argument relies on the assumption that
1. normal levels of unemployment are rarely exceeded.
2. unemployment is not normally concentrated in geographically isolated segments of population.
3. the number of people who each know someone who is unemployed is always higher than 90% of the population.
4. Roland is not consciously distorting the statistics he presents
5. knowledge that a personal acquaintance is unemployed generates more fear of loosing one's job than does knowledge of unemployment statistics


It should be B. Imagine you have the following situation:

a town of 50,000 has 100% unemployment, and no one in this town speaks to anyone else in the country
the other 950,000 people in the country, or 95% of the population, all have jobs

Then only 5% of your population would know anyone who was unemployed - the 5% in the isolated town full of unemployed people. Sharon's argument assumes that unemployment is spread fairly equally across the population.


IanStewart:
How do you justify the fact stated by Roland then? Shouldn't that be true at the same time?
_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

Manager
Manager
avatar
Joined: 16 Mar 2011
Posts: 187
Re: Unemployment statistics [#permalink]

Show Tags

New post 16 Jun 2011, 14:07
B, if you negate B it will sink the conclusion... so it is the only right answer...
VP
VP
avatar
Status: There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Joined: 08 May 2009
Posts: 1260
Re: Unemployment statistics [#permalink]

Show Tags

New post 16 Jun 2011, 17:53
nothing except B here.
_________________

Visit -- http://www.sustainable-sphere.com/
Promote Green Business,Sustainable Living and Green Earth !!

Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 113
Location: Shanghai China
Roland: the alarming fact is that 90 percent of the people [#permalink]

Show Tags

New post 27 Jul 2011, 07:12
71. Roland: the alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.

Sharon: but a normal, moderate level of unemployment is 5 percent, with one out of 20 workers unemployed. So at any given time if a person knows approximately 50 workers, one or more will very likely be unemployed.



Sharon's argument relies on the assumption that

a) Normal levels of unemployment are rarely exceeded.

b) Unemployed is not normally concertrated in geographically isolated segments of the population.

c) The number of people who each know someone who is unemployed is always higher than 90 percent of the population

d) Roland is not consciously distorting the statistics he presents

e) Knowledge that a personal acquaintance is unemployed generates more fear of losing ones' job than does knowledge of unemployment statistics.


Why C is not the case? Uh? Since it is said that " Higher than 90% of the population", this can totally indicate that one person knows 50 workers, one or more will like be umemployed. Why, why why?why??????
Intern
Intern
avatar
Joined: 13 Jul 2011
Posts: 12
Location: Turkey
WE: Consulting (Consulting)
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 27 Jul 2011, 07:35
C is not an assumption, it is an outcome parallel to arguement.

B, if the concentration of unemployment is concentrated in a specific area, then some people living in certain areas will know lower than average number of unemployed citizens.
Manager
Manager
avatar
Joined: 24 Jun 2011
Posts: 50
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 27 Jul 2011, 10:09
To find one unemployed person out of every 20 people, we need the distribution of unemployed people to be even among the population which is what is emphasized in B.

Sharon in effect is saying that the normal level of unemployment itself is higher assuming we have an even distribution.

So C could be a conclusion assuming B.
Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 113
Location: Shanghai China
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 27 Jul 2011, 20:33
I just have an idea that the population of people who knows other umemployed higher than 90% , I think at some level it is assumption of the argument because only higher than 90%, they know someone is employed, if you are not higher than 90%, including those 10% (100%-90%) that they won't other is employed.

why do I have this thought, why am I wrong about this answer?



RivaM wrote:
To find one unemployed person out of every 20 people, we need the distribution of unemployed people to be even among the population which is what is emphasized in B.

Sharon in effect is saying that the normal level of unemployment itself is higher assuming we have an even distribution.

So C could be a conclusion assuming B.
Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 113
Location: Shanghai China
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 27 Jul 2011, 20:34
I'm sorry, the last one is " unemployed"~

tracyyahoo wrote:
I just have an idea that the population of people who knows other umemployed higher than 90% , I think at some level it is assumption of the argument because only higher than 90%, they know someone is employed, if you are not higher than 90%, including those 10% (100%-90%) that they won't other is employed.

why do I have this thought, why am I wrong about this answer?



RivaM wrote:
To find one unemployed person out of every 20 people, we need the distribution of unemployed people to be even among the population which is what is emphasized in B.

Sharon in effect is saying that the normal level of unemployment itself is higher assuming we have an even distribution.

So C could be a conclusion assuming B.
Manager
Manager
avatar
Status: Mission GMAT
Joined: 20 Apr 2011
Posts: 88
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 22 Aug 2011, 12:15
C is wrong because C is one of the premises in the argument. It is NOT an assumption that links the other premise with the conclusion. Also the conclusion would still be valid if choice C is negated. Hence, C is incorrect.

Dialogue CR present subtle reasoning. The line of reasoning to the conclusion is based ONLY on Sharon's claims. she says that 5 % unemployment is normal level. i.e. One person out of every 20 people is unemployed. Knowing such a person implies that these people are uniformly distributed among the acquaintance circle of employed people. The correct choice does go a little overboard in that it assumes that geographical remoteness is the only cause. For eg. we can even assume that unemployed poeple do not socialise with employed people or in general are not educated or don't fall in the same circle for aby reason. but this is the choice that is closest to being correct! Rest ones are not linked with the conclusion
_________________

Hope this post helps! :)
Your kudos will let me know.

Manager
Manager
avatar
Status: Mission GMAT
Joined: 20 Apr 2011
Posts: 88
Re: other 12th OG problem, pls help [#permalink]

Show Tags

New post 22 Aug 2011, 12:28
In other words,

Sharon's reasoning is merely based upon the statistics that moderate level of unemployment is 5 percent, with one out of 20 workers unemployed.

Conclusion: So at any given time if a person knows approximately 50 workers, one or more will very likely be unemployed.

Even if we were to assume that Roland's claim 90 percent of the people in this country now report that they know someone who is unemployed were not true or not presented, Sharon's line of reasoning would not change!

The first part here is quite redundant.
_________________

Hope this post helps! :)
Your kudos will let me know.

Intern
Intern
avatar
Joined: 07 Nov 2011
Posts: 30
Re: Unemployment statistics [#permalink]

Show Tags

New post 23 Feb 2012, 11:18
IanStewart wrote:
nitindas wrote:
Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.
Sharon: But a normal,moderate level of unemployment is 5 percent,with 1 out of 20 workers unemployed.So at any given time if a person knows approximately 50 workers,1 or more will very likely to be unemployed.

Sharon's argument relies on the assumption that
1. normal levels of unemployment are rarely exceeded.
2. unemployment is not normally concentrated in geographically isolated segments of population.
3. the number of people who each know someone who is unemployed is always higher than 90% of the population.
4. Roland is not consciously distorting the statistics he presents
5. knowledge that a personal acquaintance is unemployed generates more fear of loosing one's job than does knowledge of unemployment statistics


It should be B. Imagine you have the following situation:

a town of 50,000 has 100% unemployment, and no one in this town speaks to anyone else in the country
the other 950,000 people in the country, or 95% of the population, all have jobs

Then only 5% of your population would know anyone who was unemployed - the 5% in the isolated town full of unemployed people. Sharon's argument assumes that unemployment is spread fairly equally across the population.


Isn't option B) out of scope. I agree that assumption is never stated but this option seems clearly out of scope
Manager
Manager
avatar
Joined: 09 Jul 2010
Posts: 121
GMAT ToolKit User
Re: Roland: The alarming fact is that 90 percent of the people [#permalink]

Show Tags

New post 05 Mar 2012, 11:42
I also feel option B is out of scope, could some please explain?

Thanks
Manager
Manager
User avatar
Joined: 01 Nov 2010
Posts: 173
Location: Zürich, Switzerland
Re: Roland: The alarming fact is that 90 percent of the people [#permalink]

Show Tags

New post 05 Mar 2012, 15:49
I would also go for option B.
Re: Roland: The alarming fact is that 90 percent of the people   [#permalink] 05 Mar 2012, 15:49

Go to page   Previous    1   2   3   4   5    Next  [ 86 posts ] 

Display posts from previous: Sort by

Roland: The alarming fact is that 90 percent of the-OG10#139

  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 | Emoji artwork provided by EmojiOne

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®.