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  3. consider a  two-sample t-test. why is the

Consider a  two-sample t-test. Why is the sign of the t-test arbitrary? . Why are the degrees of...

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Statistics

Consider a  two-sample t-test.

  1. Why is the sign of the t-test arbitrary? .

    1. Why are the degrees of freedom associated with the dependentgroups t-test always smaller than the degrees of freedom for theindependent groups t-test? Be sure to illustrate the calculation ofeach type of df.

    2. Describe how one would test the homogeneity of variance in atwo-sample t-test. How is this information used in yourhypothesis testing?

    3. How would you go about using a confidence interval to illustratea statistically significant difference (or lack thereof) betweentwo groups?

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