Please can you help me (Statistic))
posted by Fakaapo. Suetusi .
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

The only thing I can think of is increasing the size of the sample.

You could also think about changing the type 2 error.

Sorry, I meant to write type 1 error (or alpha level).
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