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Left-handed persons suffer more frequently than do

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Left-handed persons suffer more frequently than do [#permalink] New post 25 Mar 2009, 03:15
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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.

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Re: CR-Left-handed Persons [#permalink] New post 25 Mar 2009, 04:06
IMO C
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Re: CR-Left-handed Persons [#permalink] New post 25 Mar 2009, 16:14
nitya34 wrote:
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.

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A,B,D are too much of an inference that can be drawn

E is completely absurd.

Even though C did not appeal to me very clearly because it brings a new group of people, people whose math sucks it is by far the closest one.
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Re: CR-Left-handed Persons [#permalink] New post 27 Mar 2009, 14:15
Consider 2 premised indenpendelty and then try to find the answer. It will be easy.

We are trying to related both premises. If we take only second premise then we will come to C easily.
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Re: CR-Left-handed Persons [#permalink] New post 27 Mar 2009, 14:46
I will go with E.


nitya34 wrote:
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. ( As per passage left handed people suffer more frequently that do right handed people -> People who suffer from immune disorders are superset of ( left handed + right handed) It can be inferred from the passage that left handed people's mathematical reasoning ability is unusually good. Moreover, 'OR' used in (E) reflects the same.
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Re: CR-Left-handed Persons [#permalink] New post 17 Apr 2009, 09:48
IMO C.


nitya34 wrote:
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.
- left-handed has most chance to be prone to allergy but reverse is not true.
(B) Most left-handed mathematicians suffer from some kind of allergy.
- mere correlation stated so causation is wrong
(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.
- got through POE
(D) If a left-handed person suffers from an allergy, that person will probably be good at mathematics
- same as B.
(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.
- this relation can not be vindicated because no information has been given towards "all people suffer from allergies".
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IMO C
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Re: CR-Left-handed Persons [#permalink] New post 17 Apr 2009, 10:30
Another C with the similar reasons as by others.
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Re: CR-Left-handed Persons [#permalink] New post 17 Apr 2009, 22:04
C
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Re: CR-Left-handed Persons [#permalink] New post 19 Apr 2009, 11:29
HI mates,

I'd say C as well

OA and Source?

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Re: CR-Left-handed Persons [#permalink] New post 21 Apr 2009, 19:26
C

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 --> this seems right, but actually, there is no information about this. The argument wants to cite that, for example, in set of 10 left-handed people, there are 7 people who suffers from such allergies. But in a set of 10 right-handed people, there are just 5 people who suffers from such allergies. But there is no absolute number of people who suffer from such allergies, so we can't conclude that more left-handed than right handed people suffer from such allergies
(B) Most left-handed mathematicians suffer from some kind of allergy --> no information. The argument just mentions that left-handed is more frequent than right-handed people in suffering such immune disorders, not that most left-handed is immune disorder
(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 --> the best. Because left-handed people tend to be better than right people in mathematics, so it's correct that they are more proportional than right handed people in a set of higher than average mathematical reasoning people. Therefore, in a set of poor mathematical reasoning people, they are fewer than right handed people. Therefore, proportionally, left-handed people is lower in higher set than in lower set
(D) If a left-handed person suffers from an allergy, that person will probably be good at mathematics -->no support for such connection in the argument
(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 -->unrelevant
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Re: CR-Left-handed Persons [#permalink] New post 28 Oct 2009, 00:39
Agree with C
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Re: CR-Left-handed Persons [#permalink] New post 28 Oct 2009, 05:44
agree with C. What is its source?
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Re: CR-Left-handed Persons [#permalink] New post 28 Oct 2009, 06:00
I would guess C
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Re: CR-Left-handed Persons [#permalink] New post 28 Oct 2009, 06:06
I got C,
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Re: CR-Left-handed Persons   [#permalink] 28 Oct 2009, 06:06
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