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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