Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-Power-818-en_uu-Power-818-en
   name	uu-Power-818-en
   section	Inferential Statistics/NHST/Power
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Calculation
   Language	English
   Level	Statistical Literacy

   Question

   A population has on the variable Y a mean $\mu$ = 20 and standard deviation $$sigma$ = 10. One applies an intervention that causes the population mean to drop to 11.96. Now, if in a random sample of 100 individuals one obtains the H0: $\mu$ = 10 tests at a significance level of 5%, what is the power of this test?

   
   
   1. FALSE: 34.1%
   2. TRUE: 50.0%
   3. FALSE: 68.2%
   4. FALSE: 84.1%
   
   
   1. This answer is incorrect.
   2. This answer is correct.
   3. This answer is incorrect.
   4. This answer is incorrect.