Which of the following statements are necessary to increase statistical power?
A. Increasing the sample size
B. Using two tailed test
C. Increasing the alpha level
D. Decreasing the variability among participants
E. Increasing the magnitude of treatment
Choose the correct answer from the options given below:
1
A, B, D, E only
2
A, C, D, E only
3
B, C, D, E only
4
A, B, C, E only