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Public health official: Some researchers suspect that magnet

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Public health official: Some researchers suspect that magnet [#permalink]

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Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

Which of the following would it be most useful to establish in order to evaluate the public health official's argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes
B. What proportion of people who live near high-voltage power lines believe that those lines may cause health problems
C. Whether high-voltage power lines are routed near residential dwellings in urban areas
D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic fields from high-voltage power lines
E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 22 Jul 2013, 06:24
aparnaharish wrote:
Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

Which of the following would it be most useful to establish in order to evaluate the public health official's argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes
B. What proportion of people who live near high-voltage power lines believe that those lines may cause health problems
C. Whether high-voltage power lines are routed near residential dwellings in urban areas
D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic fields from high-voltage power lines
E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines


Point 1: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines.
Point 2: Public health official states that this is very unlikely as beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

We have to evaluate whether it is unlikely that those magnetic lines have a negative effect on health of people.
Among the available answer choices, A is relevant as it will affect the Public Official's statement most if answered affirmatively or negatively.

+1 A.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 22 Apr 2015, 22:06
This question, though Official, has some ambiguity in my opinion. other options make no sense but OA is not the best
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

Which of the following would it be most useful to establish in order to evaluate the public health official's argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes -> looks good , candidate of variance test to be sure.

Evaluate argument, lets take a variance test.

Lets say A) yes
Then the conclusion breaks. The conclusion is "this is extremely unlikely".
Lets say A) No.
Then the conclusion Stays.

So this is the correct answer.


B. What proportion of people who live near high-voltage power lines believe that those lines may cause health problems -> it is not about people belief.
C. Whether high-voltage power lines are routed near residential dwellings in urban areas -> We are talking about areas in general.
D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic fields from high-voltage power lines -> Specific disease is out of scope of the argument
E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines -> Average strength of magnetic field in the home is used for comparison, It is not required to know what is the actual value of the magnetic field. The argument deals with whether the average strength is bad enough to cause any issue.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 08 May 2015, 20:49
can any one tell me the source of this question.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 09 May 2015, 01:22
aparnaharish wrote:
Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.


1. Magnetic fields from high-voltage power lines can cause health problems to people living near it.

2. Beyond a distance of few feet, the strength of the magnetic fields is less than the average strength of magnetic fields in homes living away from those lines.


Which of the following would it be most useful to establish in order to evaluate the public health official's argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes

The 2nd sentence clearly mentions effects of power lines located away from residential homes - This can be a possible answer.

B. What proportion of people who live near high-voltage power lines believe that those lines may cause health problems

We have no data to comment on Proportion - Incorrect.

C. Whether high-voltage power lines are routed near residential dwellings in urban areas

The statement provided explicitly claims that " Magnetic fields from high-voltage power lines can cause health problems to people living near it. " so it is not desirable to place power lines near residential dwellings in urban areas.

The Official mentions that establishing power lines - Incorrect.

D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic fields from high-voltage power lines

No information provided for specific diseases/conditions - Incorrect

E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines

Average strength of magnetic fields in workplaces can't be predicted , because we don't have such data. - Incorrect.


Hince , IMHO - A
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 09 May 2015, 05:52
Dutta wrote:
can any one tell me the source of this question.


This question is taken from GMATPrep Question Pack 1.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 10 May 2015, 19:02
Guys
The same question I got in actual GMAT in 2015 March.
also I have seen Prep Qn(s) are quite in tune to actual GMAT Qns.

FYI only thanks.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 08 Jul 2017, 03:21
Imo A
The argument tells us that fear of developing disease by living near high voltage lines is not correct as they are exposed to much less strength of magnetic field the people living is areas far off from such lines are exposed to .
So if we whether those people who live far off can develop disease because of magnetic field then we can determine whether people living near such high voltage lines are prone to diseases.
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Re: Public health official: Some researchers suspect that magnet [#permalink]

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New post 11 Nov 2017, 18:38
Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

Which of the following would it be most useful to establish in order to evaluate the public health official's argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes. The premise is that the strength of magnetic field of high voltage power lines < the strength of magnetic field in homes not located close to power lines. If the magnetic field in homes is still harmful, magnetic field of high voltage might still be harmful. However, if the magnetic fields in those homes do not cause health problems, then the high voltage power lines won't cause health issues since the magnetic field is even weaker
B. What proportion of people who live near high-voltage power lines believe that those lines may cause health problems What people believe is irrelevant; the magnetic field may not be harmful even when people believe it is
C. Whether high-voltage power lines are routed near residential dwellings in urban areas The argument can still hold even when high-voltage power lines are routed near dwellings
D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic fields from high-voltage power lines [color=#ff0000]Type of disease is irrelevant. We want to know whether high voltage power lines affect health. What diseases they do it doesn't matter [/color]
E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines Workplaces? Argument is about homes. Out of scope

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Re: Public health official: Some researchers suspect that magnet   [#permalink] 11 Nov 2017, 18:38
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