GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Oct 2019, 15:23

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

Left-handed persons have an advantage over right-handed persons on tas

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

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Status: Keep fighting!
Affiliations: IIT Madras
Joined: 31 Jul 2010
Posts: 178
WE 1: 2+ years - Programming
WE 2: 3+ years - Product developement,
WE 3: 2+ years - Program management
Left-handed persons have an advantage over right-handed persons on tas  [#permalink]

Show Tags

New post Updated on: 09 Oct 2018, 03:57
11
14
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

56% (02:06) correct 44% (02:18) wrong based on 834 sessions

HideShow timer Statistics

Left-handed persons have an advantage over right-handed persons on tasks that are controlled by the right hemisphere of the brain and painting, for most people, is a task mostly governed by the right hemisphere of the brain. However, left-handed persons contract viruses, such as influenza, more frequently than do right-handed persons.

The information above, if true, best supports which of the following hypotheses?


(A) There is a greater proportion of left-handed persons among painters than there is among non-painters.

(B) Most people who contract influenza or other viruses are left-handed rather than right-handed.

(C) If a left-handed person contracts a virus similar to influenza, that person will probably be a painter.

(D) Most left-handed painters are more susceptible to influenza than is the population as a whole.

(E) There are a greater proportion of left-handed persons among painters than there are right-handed persons among non-painters.



Spoiler: :: expln
Explanation:
ID Question Type and Task
Something that is supported by the argument is an inference.

This question is an inference question. Therefore the task is to find an inevitable conclusion from information given. Find what must be true.

Read the Argument and Extract Necessary Information:

In inference questions:

Note how specific the topics are, watch out for percents versus numbers, look for the logical combination of two points.

Known:
Lefties have an advantage on tasks controlled by the right side of the brain
Painting is controlled by the right side of the brain
Lefties get viruses more frequently

Formulate an Answer to the Question
There are 2 possible answers that should spring to mind based on the facts presented:

1. Lefties have advantage on right brain functions + painting is right brain function = lefties have advantage in painting.

2. Lefties contract viruses more frequently + lefties have advantage in right brain functions + painting is right brain function = people with advantage painting contract viruses more frequently.

Eliminate Answer Choices:
(A) Close in to what we said- Keep.

(B) Not true we know lefties contract more often but what if there are significantly fewer lefties in the world? If that is the case than most who contract would be righty but lefties might still contract more often, thus this does not have to be true – eliminate.

(C) The argument gives no indication that there is a cause and effect link between contracting viruses and painting, thus this does not have to be true – eliminate.

(D) The argument makes no mention of the sub group "left-handed painters". You are told that lefties in general contract viruses more often but not whether left-handed painters do so more often than other left-handers or other sub-groups of lefties, thus this does not have to be true – eliminate.

(E) The argument gives no information about non-painters, thus this does not have to be true – eliminate.

Originally posted by hemanthp on 10 Oct 2010, 01:27.
Last edited by Bunuel on 09 Oct 2018, 03:57, edited 2 times in total.
Renamed the topic and edited the question.
Most Helpful Expert Reply
GMAT Tutor
avatar
G
Joined: 24 Jun 2008
Posts: 1806
Re: Left-handed persons have an advantage over right-handed persons on tas  [#permalink]

Show Tags

New post 11 Oct 2010, 11:12
4
1
That OE quoted above is just nonsense. If that's from a prep company, find better material to work from.

Quote:
This question is an inference question. Therefore the task is to find an inevitable conclusion from information given.


This is a distortion of what the question asks. We're asked to decide "which of the following hypotheses" is "best supported" by the information given. That is *not* the same thing as finding an "inevitable conclusion"; if a conclusion is 'inevitable', we don't need to introduce any additional assumptions. A conclusion can be 'supported' by the information provided we any assumptions we make are reasonable. There is no answer choice here which is an 'inevitable conclusion' from the information given; we're going to need to introduce assumptions, and we need to be sure our assumptions are reasonable.

Quote:
There are 2 possible answers that should spring to mind based on the facts presented:

1. Lefties have advantage on right brain functions + painting is right brain function = lefties have advantage in painting.

Eliminate Answer Choices:
(A) Close in to what we said- Keep.


A isn't 'close' to what they said at all. Lefties have an advantage at painting; that does not mean that more lefties become painters. For A to be a good answer, you need to make enormous assumptions here: you first would need to assume that people end up doing things they're good at, but second, you'd need to assume that there aren't other things lefties are better at that they might pursue instead of painting. That lefties are better at "right-brained" tasks suggests that lefties might be better than righties at all kinds of tasks, some of which might be more attractive to them than painting. In all, A is really far-fetched. If we can find an answer that requires us to assume less, it will be a better answer.

Quote:
(D) The argument makes no mention of the sub group "left-handed painters". You are told that lefties in general contract viruses more often but not whether left-handed painters do so more often than other left-handers or other sub-groups of lefties, thus this does not have to be true – eliminate.


We aren't asked to find something which 'must be true' here; we only need to find the hypothesis 'best supported by the
information' given. D is perfectly well supported provided we assume that lefthanded painters are as susceptible to influenza as are lefthanded non-painters. That seems to me to be a perfectly reasonable assumption - why would choosing to become a painter influence your susceptibility to influenza? D is certainly a more reasonable answer than A here. I'd add - D does not need to be true here, since we'd need to introduce an assumption to reach D as a conclusion. But it's certainly the most reasonable of the five answer choices.
_________________
GMAT Tutor in Toronto

If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com
Most Helpful Community Reply
SVP
SVP
User avatar
Joined: 06 Sep 2013
Posts: 1570
Concentration: Finance
GMAT ToolKit User
Re: Left-handed persons have an advantage over right-handed persons on tas  [#permalink]

Show Tags

New post 27 May 2014, 08:15
3
2
hemanthp wrote:
Left-handed persons have an advantage over right-handed persons on tasks that are controlled by the right hemisphere of the brain and painting, for most people, is a task mostly governed by the right hemisphere of the brain. However, left-handed persons contract viruses, such as influenza, more frequently than do right-handed persons.

The information above, if true, best supports which of the following hypotheses?

(A) There is a greater proportion of left-handed persons among painters than there is among non-painters.
(B) Most people who contract influenza or other viruses are left-handed rather than right-handed.
(C) If a left-handed person contracts a virus similar to influenza, that person will probably be a painter.
(D) Most left-handed painters are more susceptible to influenza than is the population as a whole.
(E) There are a greater proportion of left-handed persons among painters than there are right-handed persons among non-painters.

I am not sure I agree with the answer. What do you guys think?
Don't forget KUDOS if you like the post.

Spoiler: :: expln
Explanation:
ID Question Type and Task
Something that is supported by the argument is an inference.

This question is an inference question. Therefore the task is to find an inevitable conclusion from information given. Find what must be true.

Read the Argument and Extract Necessary Information:

In inference questions:

Note how specific the topics are, watch out for percents versus numbers, look for the logical combination of two points.

Known:
Lefties have an advantage on tasks controlled by the right side of the brain
Painting is controlled by the right side of the brain
Lefties get viruses more frequently

Formulate an Answer to the Question
There are 2 possible answers that should spring to mind based on the facts presented:

1. Lefties have advantage on right brain functions + painting is right brain function = lefties have advantage in painting.

2. Lefties contract viruses more frequently + lefties have advantage in right brain functions + painting is right brain function = people with advantage painting contract viruses more frequently.

Eliminate Answer Choices:
(A) Close in to what we said- Keep.

(B) Not true we know lefties contract more often but what if there are significantly fewer lefties in the world? If that is the case than most who contract would be righty but lefties might still contract more often, thus this does not have to be true – eliminate.

(C) The argument gives no indication that there is a cause and effect link between contracting viruses and painting, thus this does not have to be true – eliminate.

(D) The argument makes no mention of the sub group "left-handed painters". You are told that lefties in general contract viruses more often but not whether left-handed painters do so more often than other left-handers or other sub-groups of lefties, thus this does not have to be true – eliminate.

(E) The argument gives no information about non-painters, thus this does not have to be true – eliminate.


Left-handed persons have an advantage over right-handed persons on tasks that are controlled by the right hemisphere of the brain and painting, for most people, is a task mostly governed by the right hemisphere of the brain. However, left-handed persons contract viruses, such as influenza, more frequently than do right-handed persons.

(A) There is a greater proportion of left-handed persons among painters than there is among non-painters. STIMULUS SAYS THEY HAVE AN ADVANTAGE NOT THAT THERE ARE MORE NUMEROUS - WRONG
(B) Most people who contract influenza or other viruses are left-handed rather than right-handed - STIMULUS SAYS MORE SUSCEPTIBLE, MAYBE THEY NEVER CONTRACT THE VIRUSES - WRONG
(C) If a left-handed person contracts a virus similar to influenza, that person will probably be a painter- NOT AT ALL- WRONG
(D) Most left-handed painters are more susceptible to influenza than is the population as a whole.- THIS HAS TO BE TRUE, THERE ARE MORE SUSCEPTIBLE THAN RIGHT HANDED, THEREFORE, THEY ARE MORE SUSCEPTIBLE IN POPULATION AS A WHOLE AS POP = RH+LH- CORRECT
(E) There are a greater proportion of left-handed persons among painters than there are right-handed persons among non-painters- AGAIN STIMULUS SAYS THEY HAVE AN ADVANTAGE, NOT THAT THEY ARE MORE NUMEROUS- WRONG

Hope it helps
General Discussion
Manager
Manager
avatar
Status: Keep fighting!
Affiliations: IIT Madras
Joined: 31 Jul 2010
Posts: 178
WE 1: 2+ years - Programming
WE 2: 3+ years - Product developement,
WE 3: 2+ years - Program management
Re: Left-handed persons have an advantage over right-handed persons on tas  [#permalink]

Show Tags

New post 10 Oct 2010, 23:17
1
How do we know that A is correct for sure? Though lefties are good at painting need not necessarily mean that they will take up painting right? And before a lefty starts painting he/she will not know if he/she will be good at it and so just because someone is left handed does not mean they are naturally inclined to paint.
On the other hand D says, the left handed ppl who are painters are more susceptible to viruses, which follows straight from the stem.
any comments?
Whiplash or Ian stewart?
Manager
Manager
avatar
S
Joined: 26 Mar 2019
Posts: 100
Concentration: Finance, Strategy
Re: Left-handed persons have an advantage over right-handed persons on tas  [#permalink]

Show Tags

New post 14 Jul 2019, 11:55
IanStewart wrote:
That OE quoted above is just nonsense. If that's from a prep company, find better material to work from.

Quote:
This question is an inference question. Therefore the task is to find an inevitable conclusion from information given.


This is a distortion of what the question asks. We're asked to decide "which of the following hypotheses" is "best supported" by the information given. That is *not* the same thing as finding an "inevitable conclusion"; if a conclusion is 'inevitable', we don't need to introduce any additional assumptions. A conclusion can be 'supported' by the information provided we any assumptions we make are reasonable. There is no answer choice here which is an 'inevitable conclusion' from the information given; we're going to need to introduce assumptions, and we need to be sure our assumptions are reasonable.

Quote:
There are 2 possible answers that should spring to mind based on the facts presented:

1. Lefties have advantage on right brain functions + painting is right brain function = lefties have advantage in painting.

Eliminate Answer Choices:
(A) Close in to what we said- Keep.


A isn't 'close' to what they said at all. Lefties have an advantage at painting; that does not mean that more lefties become painters. For A to be a good answer, you need to make enormous assumptions here: you first would need to assume that people end up doing things they're good at, but second, you'd need to assume that there aren't other things lefties are better at that they might pursue instead of painting. That lefties are better at "right-brained" tasks suggests that lefties might be better than righties at all kinds of tasks, some of which might be more attractive to them than painting. In all, A is really far-fetched. If we can find an answer that requires us to assume less, it will be a better answer.

Quote:
(D) The argument makes no mention of the sub group "left-handed painters". You are told that lefties in general contract viruses more often but not whether left-handed painters do so more often than other left-handers or other sub-groups of lefties, thus this does not have to be true – eliminate.


We aren't asked to find something which 'must be true' here; we only need to find the hypothesis 'best supported by the
information' given. D is perfectly well supported provided we assume that lefthanded painters are as susceptible to influenza as are lefthanded non-painters. That seems to me to be a perfectly reasonable assumption - why would choosing to become a painter influence your susceptibility to influenza? D is certainly a more reasonable answer than A here. I'd add - D does not need to be true here, since we'd need to introduce an assumption to reach D as a conclusion. But it's certainly the most reasonable of the five answer choices.


Hi, what is wrong with an option B? To me it is also a good choice since it says that in general left-handed people contract more influenza viruses than right-handed people which was written in the text.
GMAT Club Bot
Re: Left-handed persons have an advantage over right-handed persons on tas   [#permalink] 14 Jul 2019, 11:55
Display posts from previous: Sort by

Left-handed persons have an advantage over right-handed persons on tas

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





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne