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7. Should causality be assessed before or after evaluating validity? Why? 8. At the completion of...

7. Should causality be assessed before or after evaluating validity? Why?

8. At the completion of a study, a statistical test was performed and a P value of .02 was obtained. State the meaning of this P value. Are these results statistically significant? Why?

9. What two factors determine the magnitude of the P value?

10. What information does the confidence interval provide that the P value does not provide?

Math   Statistics-And-Probability   
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