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lcai

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发表于 2011-7-11 15:21 | 只看该作者
mik82 Wrote:
-------------------------------------------------------
>
> No. Please go back and read level 1 books about
> normal distribution.


I get through that material, but still miss the point.

please explain detailly, thanx!!!

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Zestt

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12#
发表于 2011-7-11 15:21 | 只看该作者
go back - refer to level I -- check 2 tailed test for 5% Level of Significance - what it really means...

that is what mik82 is referring to.

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IAmNeil

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发表于 2011-7-11 15:21 | 只看该作者
Hi, guys.

I get this one.

"it is 95% confidence of a one-tailed distribution. Loss is one-sided ( always below mean) . That would be 2-stdev below mean. "

this is the key.

Thanx!

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