## A Summary of Variance

Comparison Test Procedures

## Using the equations on the previous pages we have established all the statistical data we need to conduct the hypothesis test. One question remains:

What is our Hypothesis ?Because we have established that s^{2}_{1}> s^{2}_{2}, we have a choice between two possible hypotheses:or

## The latter of the two,

^{2}_{1}^{2}_{2}, naturally implies a right-tailed hypothesis test. There are no left-tailed tests. The former,^{2}_{1 }=^{2}_{2}is the more common test and requires a two-tailed test.How do we find the significance level ?Procedure used to determine significance level

Case Example: Pain Medication and Response Time

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