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4,400 participants in a study were surveyed regarding side

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4,400 participants in a study were surveyed regarding side [#permalink] New post 05 Jul 2016, 04:29
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Question Stats:

52% (01:07) correct 47% (01:10) wrong based on 19 sessions
4,400 participants in a study were surveyed regarding side effects of a new medication, and x percent reported experiencing drowsiness. If x is rounded to the nearest integer, the result is 8. Which of the following could be the number of survey participants who reported experiencing drowsiness?

Indicate all such values.

A. 325
B. 330
C. 352
D. 375

[Reveal] Spoiler: OA
B and C
[Reveal] Spoiler: OA

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Re: 4,400 participants in a study were surveyed regarding side [#permalink] New post 11 Jul 2016, 04:54
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if x is rounded to 8 then x must be between 7.5 and 8.4 inclusive. 7.5 % of 4400 is 330 and 8.4% of 4400 is 369.6. So number of survey participants who reported experiencing drowsiness is between 330 and 369.6. Hence answer is B and C
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Re: 4,400 participants in a study were surveyed regarding side [#permalink] New post 26 Aug 2017, 05:56
rapsjade wrote:
if x is rounded to 8 then x must be between 7.5 and 8.4 inclusive. 7.5 % of 4400 is 330 and 8.4% of 4400 is 369.6. So number of survey participants who reported experiencing drowsiness is between 330 and 369.6. Hence answer is B and C

Should be between 7.5 and 8.5. With 8.4 inclusive you are excluding the possibility of 8.45%, 8.49%, 8.499%, etc. The range is 330 - 374.
Re: 4,400 participants in a study were surveyed regarding side   [#permalink] 26 Aug 2017, 05:56
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4,400 participants in a study were surveyed regarding side

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