Significance Tests. FPP 26-27. Significance tests. Question: Given the collected data, is there evidence against a specified hypothesis about the corresponding parameter? In other words, are the data consistent or not with a specified hypothesis?. Logic of significance tests:.
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Target: to show that the mean is now less than 3.8 days.
Ho: μ= 3.8 vs Ha: μ< 3.8
p-value Evidence against H0
< 0.01-ish very strong
> .01-ish and <.05-ish moderate
> .05-ish and < .10-ish weak
> .10 ish practically none