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# Reviewing historical data, medical researchers in California

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Director
Joined: 21 Sep 2004
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Reviewing historical data, medical researchers in California [#permalink]

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20 Mar 2005, 11:18
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4. Reviewing historical data, medical researchers in California found that counties with the largest number of television sets per capita have had the lowest incidence of a serious brain disease, mosquito-borne encephalitis. The researchers have concluded that people in these counties stay indoors more and thus avoid exposure to the disease.
The researchersâ€™ conclusion would be most strengthened if which of the following were true?

(A) Programs designed to control the size of disease-bearing mosquito populations have not affected the incidence of mosquito borne encephalitis.
(B) The occupations of county residents affect their risk of exposure to mosquito-borne encephalitis more than does television-watching.
(C) The incidence of mosquito-borne encephalitis in counties with the largest number of television sets per capita is likely to decrease even further.
(D) The more time people in a county spend outdoors, the greater their awareness of the dangers of mosquito-borne encephalitis.
(E) The more television sets there are per capita in a county, the more time the average county resident spends watching television.

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SVP
Joined: 30 Oct 2003
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Location: NewJersey USA

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20 Mar 2005, 11:42
I was debating between (A) and (E)

I believe (E) is the assumption and hence the best answer.

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Director
Joined: 21 Sep 2004
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20 Mar 2005, 11:44
OA is E

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GMAT Club Legend
Joined: 07 Jul 2004
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Location: Singapore

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20 Mar 2005, 22:06
Only E will strengthen the claim.

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Intern
Joined: 05 Sep 2006
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08 Sep 2006, 02:54
Can someone tell me why (A) is not the right answer?

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VP
Joined: 21 Mar 2006
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Location: Bangalore

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08 Sep 2006, 04:34
Reena_prabs wrote:
Can someone tell me why (A) is not the right answer?

The conclusion is - because people spend more time indoors they don't get exposed to mosquito-borne encephalitis.

E strengthens the argument by saying that in countries with more television sets, people spend more time watching tv (and thus les time outdoors).

A can't be the answer because it does not say anything about the time people spend indoors/outdoors.

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VP
Joined: 21 Aug 2006
Posts: 1012

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08 Sep 2006, 05:22
kripalkavi wrote:
Reena_prabs wrote:
Can someone tell me why (A) is not the right answer?

The conclusion is - because people spend more time indoors they don't get exposed to mosquito-borne encephalitis.

E strengthens the argument by saying that in countries with more television sets, people spend more time watching tv (and thus les time outdoors).

A can't be the answer because it does not say anything about the time people spend indoors/outdoors.

True. A is simply an irrelevant statement.
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

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CEO
Joined: 20 Nov 2005
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Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008

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08 Sep 2006, 07:29
This is a straight E.

Negate E and argument falls apart.
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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08 Sep 2006, 07:29
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