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In the past year, Harborville has had an unusually high rate of new ca

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In the past year, Harborville has had an unusually high rate of new ca  [#permalink]

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New post 31 Aug 2011, 04:20
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In the past year, Harborville has had an unusually high rate of new cases of a certain disease. An investigation revealed that over the past five years Harborville’s public water supply has had a high level of pollutants. Medical researchers have hypothesized that Harborville’s water is reposnsible for the high rate of new cases of the disease.

Each of the following provides additional support for the researcher’s hypothesis EXCEPT:


A. Most of the people afflicted with new cases of the disease had regularly drunk larger quantities of Harborville’s water than had other Harborville residents.

B. The same types of pollutants that have been found in Harborville’s water have been independently linked to occurrences in other towns of the high rates of this disease.

C. Some of the people with newly diagnosed cases of this disease began to develop the disease before Harborville’s water became polluted.

D. The rate of new cases of diseases among Harborville’s residents who get their water from private sources is not unusually high.

E. Towns with geographic and demographic characteristics similar to those of Harborville, but without polluted water do not have a high rate of the disease.


Well, unfortunately I donot have the OA but I guess the answer is C..would be nice to know ur point of view as well..
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Re: In the past year, Harborville has had an unusually high rate of new ca  [#permalink]

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New post 31 Aug 2011, 04:43
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DeeptiM wrote:
In the past year, Harborville has had an unusually high rate of new cases of a certain disease. An investigation revealed that over the past five years Harborville’s public water supply has had a high level of pollutants. Medical researchers have hypothesized that Harborville’s water is reposnsible for the high rate of new cases of the disease.

Hypothesis: High level of pollutants in public water, which people consume, is causing the voluminous cases of the new disease.

Each of the following provides additional support for the researcher’s hypothesis EXCEPT:

We need to find a weakener for the hypothesis.

A. Most of the people afflicted with new cases of the disease had regularly drunk larger quantities of Harborville’s water than had other Harborville residents.
If the people who got afflicted consumed the contaminated public water, there is a reason for suspicion. Strengthens.

B. The same types of pollutants that have been found in Harborville’s water have been independently linked to occurrences in other towns of the high rates of this disease.
The disease exists wherever people are consuming the similar type of pollutants through water. Strengthens.

C. Some of the people with newly diagnosed cases of this disease began to develop the disease before Harborville’s water became polluted.
This casts a doubt on the hypothesis. If the disease started before the pollutants were even in the picture, there's got to be an alternate cause for the outbreak. Weakens.

D. The rate of new cases of diseases among Harborville’s residents who get their water from private sources is not unusually high.
As per common belief, private supplies are usually better or less worse than the public supplies. So, the private water sources contained less quantities of the contaminant. So, reduced cause is resulting in reduced effect. In other words, less pollutants are causing less number of cases. Strengthens with some trivial assumptions.

E. Towns with geographic and demographic characteristics similar to those of Harborville, but without polluted water do not have a high rate of the disease.
All the other major factors except contaminated water are constant, making the contaminated water a prime suspect for the disease in Harborville. This strengthens the hypothesis a great deal.

Well, unfortunately I donot have the OA but I guess the answer is C..would be nice to know ur point of view as well..


Ans: "C"
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Re: In the past year, Harborville has had an unusually high rate of new ca  [#permalink]

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New post 23 Sep 2016, 23:14
In the past year, Harborville has had an unusually high rate of new cases of a certain disease. An investigation revealed that over the past five years Harborville’s public water supply has had a high level of pollutants. Medical researchers have hypothesized that Harborville’s water is reposnsible for the high rate of new cases of the disease.

Type - Strengthen except - the correct answer will either weaken or be irrelevant
Boil it down - Harborville’s water is reposnsible for the high rate of new cases of the disease.

Each of the following provides additional support for the researcher’s hypothesis EXCEPT:

A. Most of the people afflicted with new cases of the disease had regularly drunk larger quantities of Harborville’s water than had other Harborville residents. Strengthens
B. The same types of pollutants that have been found in Harborville’s water have been independently linked to occurrences in other towns of the high rates of this disease.
Strengthens
C. Some of the people with newly diagnosed cases of this disease began to develop the disease before Harborville’s water became polluted.
Correct answer - Effect existed before the cause
D. The rate of new cases of diseases among Harborville’s residents who get their water from private sources is not unusually high. Strengthens
E. Towns with geographic and demographic characteristics similar to those of Harborville, but without polluted water do not have a high rate of the disease. Strengthens

Answer C
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Re: In the past year, Harborville has had an unusually high rate of new ca  [#permalink]

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New post 23 Jan 2019, 02:01
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Re: In the past year, Harborville has had an unusually high rate of new ca   [#permalink] 23 Jan 2019, 02:01
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In the past year, Harborville has had an unusually high rate of new ca

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