Power of a test is
A. ability to detect the real effect in a population based on a sample taken from the population
B. Probability of correctly rejecting null hypothesis when it is true
C. increased when sample size increases
D. Probability of correctly rejecting null hypothesis when it is false
E. decreased when sample size increases
Choose the correct answer from the options given below:
1
A, B and E only
2
B, D and E only
3
A, C and D only
4
A, B and D only