Multiple Choice
If the researcher suspects that the strength of the relationship between two variables in the population is .40,as indexed by the correlation coefficient squared,what sample size should she use in a study involving an alpha level of .05,directional test,in order to achieve a power of .80?
A) 13
B) 16
C) 20
D) 23
Correct Answer:

Verified
Correct Answer:
Verified
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