If the researcher suspects that the strength of the relationship between two variables in the population is .07,what sample size should she use per group in a study involving two correlated groups and an alpha level of .05,nondirectional test,in order to achieve a power of .70?
A)32
B)42
C)56
D)65

Question

Quizplus · Accepted Answer

Using a power analysis calculator with the given values (effect size = 0.07, alpha = 0.05, power = 0.70, two-tailed test), a sample size of 42 per group is needed to achieve the desired power level.

If the Researcher Suspects That the Strength of the Relationship