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# Medical Researcher: As expected, records covering the last

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Manager
Joined: 13 Nov 2009
Posts: 120
Location: India
Concentration: Finance, Marketing
GPA: 4
WE: General Management (Insurance)
Followers: 1

Kudos [?]: 9 [0], given: 16

Medical Researcher: As expected, records covering the last [#permalink]  03 Jul 2011, 05:04
00:00

Difficulty:

35% (medium)

Question Stats:

56% (02:39) correct 43% (01:38) wrong based on 73 sessions
Medical Researcher: As expected, records covering the last four years of ten major hospitals indicate that babies born prematurely were more likely to have low birth weights and to suffer from health problems than were babies not born prematurely. These records also indicate that Mothers who had received adequate prenatal care were less likely to have low birth weight than were Mothers who had received inadequate prenatal care. Adequate prenatal care,therefore,significantly decreases the risk of low birth weight babies.

Which one of the following, if true, most weakens the medical researcher’s argument?

A)The hospital records indicate that many babies that are born with normal birth weights are born to mothers who had inadequate prenatal care.

B)Mothers giving birth prematurely are routinely classified by hospitals as having received inadequate prenatal care when the record of that care is not available.

C)The hospital records indicate that low birth weight babies were routinely classified as having been born prematurely.

D)Some babies not born prematurely,whose mothers received adequate prenatal care, have low birth weights.

E)Women who receive adequate prenatal care are less likely to give birth prematurely than are women who do not receive adequate prenatal care.
[Reveal] Spoiler: OA

Last edited by chandu4gmat on 03 Jul 2011, 05:15, edited 2 times in total.
SVP
Joined: 16 Nov 2010
Posts: 1698
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 29

Kudos [?]: 263 [0], given: 36

Re: CR-Causal Effect Reasoning [#permalink]  03 Jul 2011, 05:12
B - shows that there is a problem with the data used for analysis.

Disclaimer - Please don't give me kudos for this. I'm simply quoting PowerScore CR from memory.
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Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

Intern
Joined: 11 Oct 2010
Posts: 27
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: CR-Causal Effect Reasoning-source power score cr bible [#permalink]  03 Jul 2011, 18:50
b
Current Student
Affiliations: UWC
Joined: 09 May 2012
Posts: 400
Location: India
GMAT 1: 620 Q42 V33
GMAT 2: 680 Q44 V38
GPA: 3.43
WE: Engineering (Entertainment and Sports)
Followers: 20

Kudos [?]: 148 [0], given: 100

Re: Medical Researcher: As expected, records covering the last [#permalink]  13 May 2012, 02:07
this question is also repeated in the 700 level category CR questions....
Re: Medical Researcher: As expected, records covering the last   [#permalink] 13 May 2012, 02:07
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