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M-D ,M, M+d

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M-D ,M, M+d [#permalink] New post 14 Oct 2008, 20:55
Hello Friends
One more.. :(
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Re: M-D ,M, M+d [#permalink] New post 14 Oct 2008, 21:09
ISnt the answer supposed to be C on this.
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Re: M-D ,M, M+d [#permalink] New post 14 Oct 2008, 21:15
should be D

1) 68% interval means that 32% lies outside interval, symetric so 16% above m+d

2) 16% below m-d, symetrical so 16% above m+d
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Re: M-D ,M, M+d [#permalink] New post 14 Oct 2008, 21:19
Yeah ure right. My bad. The answer should be D.
Re: M-D ,M, M+d   [#permalink] 14 Oct 2008, 21:19
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