Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-Power-811-en_uu-Power-811-en
   name	uu-Power-811-en
   section	Inferential Statistics/NHST/Power
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy

   Question

   Researcher A and B both expect an effect size of .50. Researcher A uses a $\alpha$ of 5%, and researcher B uses a $\alpha$ of 10% (both two-sided). Which researcher needs a larger sample if both are to achieve a power of .70?

   
   
   1. TRUE: Researcher A
   2. FALSE: Researcher B
   3. FALSE: If both tests expect a similar effect size, they need an equally large sample size needed.
   4. FALSE: Because $\beta$ for both is .30, they need an equally large sample size.
   
   
   1. This answer is correct.
   2. This answer is incorrect.
   3. This answer is incorrect.
   4. This answer is incorrect.