Posted by Fakaapo. Suetusi on Sunday, May 13, 2012 at 10:32am.
If the confidence interval obtained is to wide. How can the width of this interval be reduce and which alternative is the best and why?
Thank you for your help

Please can you help me (Statistic))  PsyDAG, Sunday, May 13, 2012 at 11:48am
The only thing I can think of is increasing the size of the sample.

Please can you help me (Statistic))  Anonymous, Sunday, May 13, 2012 at 3:26pm
You could also think about changing the type 2 error.

Please can you help me (Statistic))  Anonymous, Sunday, May 13, 2012 at 3:29pm
Sorry, I meant to write type 1 error (or alpha level).
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