to the amount weighed. So don't you have to know the mean before you
know the standard deviation? But wait a minute - we are trying assess
the size of the mean!
Jon Cryer
At 03:42 PM 12/10/01 +0000, you wrote:
Dennis Roberts wrote:
> this is pure speculation ... i have yet to hear of any convincing case
> where the variance is known but, the mean is not
A scale (weighing device) with known precision.
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