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The number of North American children who are obese-that is, [#permalink]
18 Jul 2004, 08:51
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C
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Difficulty:
65% (hard)
Question Stats:
49% (02:15) correct
51% (01:23) wrong based on 343 sessions
114. The number of North American children who are obese-that is, who have more body fat than do 85 percent of North American children their age---is steadily increasing, according to four major studies conducted over the past 15 years.
If the finding reported above is correct, it can be properly concluded that
(A) when four majors studies all produce similar results, those studies must be accurate (B) North American children have been progressively less physically active over the past 15 years (C) the number of North American children who are not obese increased over the past 15 years (D) over the past 15 years, the number of North American children who are underweight has declined (E) the incidence of obesity in North American children tends to increase as the children grow older
Re: The number of North American children who are obese-that is, [#permalink]
18 Jul 2004, 09:12
C, my answer.
we have 15% obese children. or 15 out of 100.
consider that the children population increased to 200. This means, children population will have 30 obese children.
number of obese children is directly proportional to children population. we know that the number of obese is increasing, in turn the number of non-obese.
Re: The number of North American children who are obese-that is, [#permalink]
18 Jul 2004, 22:23
C here. I am not sure if DJ's explanation is correct or not (are we sure that the number of children has increased?), but me still thinks C is the best choice _________________
Re: The number of North American children who are obese-that is, [#permalink]
03 Sep 2015, 07:36
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Case 2 Total number of children constant ------------Obese-----Non-Obease--------Total Year-1---- 10-------- 90----------------100 Year-2---- 11-------- 89-----------------100 Year-3---- 12---------88-----------------100 Year-4---- 13--------87----------------- 100
it is not mentioned that total number of children are increasing/decreasing.In both case Number on nonobese children need not increase
Case 2 Total number of children constant ------------Obese-----Non-Obease--------Total Year-1---- 10-------- 90----------------100 Year-2---- 11-------- 89-----------------100 Year-3---- 12---------88-----------------100 Year-4---- 13--------87----------------- 100
it is not mentioned that total number of children are increasing/decreasing.In both case Number on nonobese children need not increase
If I am not mistaken, you have to keep in mind that the more obese you introduce into the system the value (body fat %) of what constitutes the 85th percentile increases.
If that happens you start seeing the number of people who was once considered obese becoming non-obese.
Just like the GMAT, if a substantial amount of people all of a sudden started scoring 800's, the more likely it is that I wont get into a top school anymore with my old score because my score potentially could no longer be considered high scoring.
gmatclubot
Re: The number of North American children who are obese-that is,
[#permalink]
11 Dec 2015, 13:28
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