Multiple Choice
Which of the following is true about statistical power?
A) The greater the power, the more likely one can detect a true difference between groups
B) Power is the probability of rejecting a false null hypothesis
C) Power is the same as alpha, or the probability of a Type I error
D) The greater the power, the more generalizable the results
E) a and b
Correct Answer:
Verified
Correct Answer:
Verified
Q1: When estimating the effect size when calculating
Q2: The situation above (problem 7) is an
Q3: Directional alternative hypotheses often are used when
Q4: Statistical power can be gained by:<br>A) Manipulating
Q6: What is important about choosing a direction
Q7: Null and alternative hypotheses refer to differences
Q8: The significance level or alpha should be
Q9: To increase power:<br>A) Alpha can be increased
Q10: Within-group variability decreases the statistical power of
Q11: An increased sample size will increase variability