Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-Power-844-en_uu-Power-844-en
   name	uu-Power-844-en
   section	Inferential Statistics/NHST/Power
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Case
   Language	English
   Level	Statistical Literacy

   Question

   Children aged 8 to 12 years watch an average of 2 hours of TV per day with a standard deviation of σ = 2. Researchers expect ADHD children of the same age to watch TV longer. To test this hypothesis, researchers draw a random sample of 36 ADHD children and conduct a one-sample z test with $\alpha$ = 5%. What is the power of this test if the population of ADHD children watches an average of 3 hours of TV per day? (Assume that $\sigma$ =2 also in the ADHD population).

   
   
   1. FALSE: 0.72
   2. FALSE: 0.85
   3. TRUE: 0.91
   4. FALSE: 0.95