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Driving under the influence is a more severe problem among

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Driving under the influence is a more severe problem among [#permalink] New post 27 Feb 2013, 13:35
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53% (03:11) correct 47% (01:43) wrong based on 139 sessions
Driving under the influence is a more severe problem among college students at rural and suburban universities than at urban universities. Social scientists wanted to determine how much of the problem is due to the distance students must drive to obtain alcohol. They looked at police records for incidents involving students at a number of universities, and compared those with the mean distances between student housing and bars and liquor stores. The longer the distances, the more likely students were to be arrested or involved in accidents.

Which of the following, if true, would it be most important to take into account in evaluating the result?

(A) Many college students do not purchase alcohol at bars or liquor stores.
(B) Students at rural, suburban, and urban universities are arrested for driving under the influence more frequently than are non-student members of their communities.
(C) The average enrollment at urban universities is greater than that at rural and suburban universities.
(D) Local sheriff's departments near rural and suburban universities devote more resources to identifying and arresting those driving under the influence than do urban police forces.
(E) The number of bars and liquor stores per square mile is nearly five times as high in urban areas as it is in rural and suburban areas.
[Reveal] Spoiler: OA

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Re: Driving under the influence is a more severe problem among [#permalink] New post 27 Feb 2013, 20:05
I would go with (D). If Local sheriffs near rural/suburban universities are devoting more resources than do urban police forces, then it undermines the claim about the correlation of number of accidents with mean distances between student housing and bars and liquor stores. Choice (E) looks close, but it incorrectly focuses on number/density of stores, rather than mean distance between housing and liquor stores.
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Re: Driving under the influence is a more severe problem among [#permalink] New post 28 Feb 2013, 04:35
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My answer is choice D because it gives a clear reason as to why more number students get caught in the rural areas when compared to students in urban areas. If the police in urban areas spends less time on drivers under influence then beginning condition of the argument is false and we shouldn't even proceed towards a conclusion.
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Re: Driving under the influence is a more severe problem among [#permalink] New post 28 Feb 2013, 06:05
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Re: Driving under the influence is a more severe problem among [#permalink] New post 11 Oct 2013, 21:38
Central Idea : More distance between bar / liquor store and rural / suburban universities --> More student caught driving under influence

IF we are not conPOE will help us better

(A) Many college students do not purchase alcohol at bars or liquor stores. --> Incorrect. Out of context
(B) Students at rural, suburban, and urban universities are arrested for driving under the influence more frequently than are non-student members of their communities. --> Incorrect. Comparisons are not between students and non student communities
(C) The average enrollment at urban universities is greater than that at rural and suburban universities. --> Incorrect. 180 degree. this means more students from urban universities should be caught driving under influences
(D) Local sheriff's departments near rural and suburban universities devote more resources to identifying and arresting those driving under the influence than do urban police forces. --> CORRECT. It give alternative possibility for higher number of cases by shifting focus from distance between bar and university to actions of police.
(E) The number of bars and liquor stores per square mile is nearly five times as high in urban areas as it is in rural and suburban areas. --> Incorrect. Distance between university and bar / liquor shop is concerning factor not their number.
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Re: Driving under the influence is a more severe problem among [#permalink] New post 14 Oct 2013, 00:44
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This appears to be a GMAT Hacks question of the day. It appeared on 2/26/2013. The Official Explanation is as follows:

Answer: D This is an evidence question, only with an atypical format for the answer choices. Each one is simply a statement; it doesn't begin with "Whether." The argument hinges on the difference between students at rural and suburban schools and those at urban schools. The result mentioned in the question is that the difference between those two groups of students, in terms of driving under the influence, is explained by the distances between housing and sources of liquor. We're looking for a choice that would either strengthen or weaken that claim. Consider each choice in turn: (A) If we knew that "all" students didn't purchase alcohol from these sources, this might cast some doubt on the claim, but "many" leaves an awful lot to be desired. It doesn't directly affect the argument. (B) This is a different comparison--students vs. non-students. We need a choice that focuses on the comparison drawn in the passage. (C) Enrollment doesn't matter, since the argument is phrased in terms of likelihood that a certain student would drive under the influence, not the absolute number of students. (D) This is correct. The conclusion was drawn based on police records. If this choice is true, students driving under the influence near rural and suburban universities are more likely to be caught doing so (and thus appear in police records) than their counterparts at urban universities. (E) The density of bars and liquor stores doesn't matter; it doesn't address the distance traveled, or amount driven under the influence, of the students in these areas.
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Re: Driving under the influence is a more severe problem among   [#permalink] 14 Oct 2013, 00:44
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