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A survey was recently conducted among ferry passengers on the North

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A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 19 May 2017, 08:30
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86% (01:12) correct 14% (01:32) wrong based on 199 sessions

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A survey was recently conducted among ferry passengers on the North Sea. Among the results was this: more of those who had taken anti-seasickness medication before their trip reported symptoms of seasickness than those who had not taken such medication. It is clear, then that despite claims by drug companies that clinical tests show the contrary, people would be better off not taking anti-seasickness medications.

Which one of the following, if true, would most weaken the conclusion above?

(A) Given rough enough weather, most ferry passengers will have some symptoms of seasickness.
(B) The clinical tests reported by the drug companies were conducted by the drug companies’ staffs.
(C) People who do not take anti-seasickness medication are just as likely to respond to a survey on seasickness as people who do.
(D) The seasickness symptoms of the people who took anti-seasickness medication would have been more severe had they not taken the medication.
(E) People who have spent money on anti-seasickness medication are less likely to admit symptoms of seasickness than those who have not.
Spoiler: OA

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Re: A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 19 May 2017, 11:05
can someone please explain why D is the correct option?
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Re: A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 19 May 2017, 12:30
A survey was recently conducted among ferry passengers on the North Sea. Among the results was this: more of those who had taken anti-seasickness medication before their trip reported symptoms of seasickness than those who had not taken such medication. It is clear, then that despite claims by drug companies that clinical tests show the contrary, people would be better off not taking anti-seasickness medications.

Which one of the following, if true, would most weaken the conclusion above?

(A) Given rough enough weather, most ferry passengers will have some symptoms of seasickness....does not attack/weaken the conclusion
(B) The clinical tests reported by the drug companies were conducted by the drug companies’ staffs.....does not attack/weaken the conclusion
(C) People who do not take anti-seasickness medication are just as likely to respond to a survey on seasickness as people who do.....Weak Contender...Argument clearly says that reported symptoms with Anti-seasick medication is higher than the contrary.
(D) The seasickness symptoms of the people who took anti-seasickness medication would have been more severe had they not taken the medication....Weakens the conclusion
(E) People who have spent money on anti-seasickness medication are less likely to admit symptoms of seasickness than those who have not...Opposite
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Re: A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 26 May 2017, 10:23
utkarshthapak wrote:
can someone please explain why D is the correct option?


D is correct because it says if they had not taken the medication, they would have more serious problems.

It weakens the conclusion that those medications are just a waste of money. Since they took it, hence they got less severe problems.

I hope that makes sense. :)
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A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 14 Dec 2017, 06:16
A survey was recently conducted among ferry passengers on the North Sea. Among the results was this: more of those who had taken anti-seasickness medication before their trip reported symptoms of seasickness than those who had not taken such medication. It is clear, then that despite claims by drug companies that clinical tests show the contrary, people would be better off not taking anti-seasickness medications.

Which one of the following, if true, would most weaken the conclusion above?

Conclusion - despite claims by drug companies that clinical tests show the contrary, people would be better off not taking anti-seasickness medications.
Pre-thinking -- what if the group of people who took the medication would have been worse without it

(A) Given rough enough weather, most ferry passengers will have some symptoms of seasickness. -- Irrelevant
(B) The clinical tests reported by the drug companies were conducted by the drug companies’ staffs. -- Irrelevant
(C) People who do not take anti-seasickness medication are just as likely to respond to a survey on seasickness as people who do. -- Incorrect -- so the survey is proper
(D) The seasickness symptoms of the people who took anti-seasickness medication would have been more severe had they not taken the medication.- Correct
(E) People who have spent money on anti-seasickness medication are less likely to admit symptoms of seasickness than those who have not. -- Irrelevant -- it tells that number of people who have taken anti-seasickness medication and have symptoms are more that survey suggests

Answer D
If we change option C to People who do not take anti-seasickness medication are less likely to respond to a survey on seasickness as people who do -- Will this too be a valid weakener ?

AjiteshArun , mikemcgarry , VeritasPrepKarishma , sayantanc2k , GMATNinja , ChiranjeevSingh , other experts -- please enlighten .
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Re: A survey was recently conducted among ferry passengers on the North [#permalink]

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New post 14 Dec 2017, 19:43
Skywalker18 wrote:
If we change option C to People who do not take anti-seasickness medication are less likely to respond to a survey on seasickness as people who do -- Will this too be a valid weakener ?
Yes, this new option will give us a reason to doubt the survey itself. The smaller number could then be explained by the survey's underreporting.
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Re: A survey was recently conducted among ferry passengers on the North   [#permalink] 14 Dec 2017, 19:43
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