Which of the following best describes the 'Power of a statistical test'?
The ability for the findings of a statistical test to provide useful results in a clinical trial.
The ability for a statistical test to avoid type I error.
The ability for a statistical test to show a statistically significant finding, if in fact there is one; how to avoid type II error.
You are performing research on a new line of beta blockers to determine whether or not the beta blocker lowers blood pressure. What type of test would you use?
Two-tailed
Six Sigma
Chi square
One-tailed
In the same research, you want to know whether or not the beta blocker effects the serum potassium level. What type of test would you use?
Two-tailed
Chi square
One-tailed
Six Sigma