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Left-handed persons

Expert replies
by crackgmat007 » Mon Jul 20, 2009 7:07 pm
Left-handed persons suffer more frequently than do right-handed persons from certain immune disorders, such as allergies. Left-handers tend to have an advantage over the right-handed majority, however, on tasks controlled by the right hemisphere of the brain, and mathematical reasoning is strongly under the influence of the right hemisphere in most people.
If the information above is true, it best supports which of the following hypotheses?
(A) Most people who suffer from allergies or other such immune disorders are left-handed rather than right-handed.
(B) Most left-handed mathematicians suffer from some kind of allergy.
(C) There are proportionally more left-handers among people whose ability to reason mathematically is above average than there are among people with poor mathematical reasoning ability.
(D) If a left-handed person suffers from an allergy, that person will probably be good at mathematics.
(E) There are proportionally more people who suffer from immune disorders such as allergies than there are people who are left-handed or people whose mathematical reasoning ability is unusually good.

OA to follow. Pls explain your answers. Tx
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Source: — Critical Reasoning |

by mehravikas » Mon Jul 20, 2009 7:17 pm
Is it E?
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by pandeyvineet24 » Mon Jul 20, 2009 7:42 pm
C for me.
number of left handers with higher mathematicial ability > number of left handers are with poor mathematicial ability
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Re: Left-handed persons

by shilpi84 » Mon Jul 20, 2009 8:44 pm
IMO:C
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by gmat740 » Mon Jul 20, 2009 9:28 pm
IMO-B
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by viju9162 » Mon Jul 20, 2009 9:58 pm
Is it E?

From the argument,

(a) left handed people suffer more frequently than do right handed people - this means that right handed people also suffer to certain extent
(b) Left handed people tend to have an advantage over right-handed people
(c) However, mathematical reasoning is under strong influence of the right hemisphere

Hence, from the above conclusion, E looks good.
"Native of" is used for a individual while "Native to" is used for a large group
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by ogbeni » Tue Jul 21, 2009 10:48 am
I vote C in that (good lord just found out that "in that" > "because" in GMAT English -HA HA - gotta practice that good grammar!!) the stimulus moves from allergies to focus on the mathematical functioning of the right hemisphere. The word 'however', is also a key transition word which is a clue to the type of hypothesis to be drawn based on the stimulus.
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by khanshainur » Sun May 15, 2016 11:21 pm
Option С looks good than other answers
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