Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-confidence-level-791-en_uva-confidence-level-791-en
   name	uva-confidence-level-791-en
   section	Inferential Statistics/Confidence Intervals/Confidence level
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Conceptual, Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	5.383
   p-value	0.0052

   Question

   For comparing two averages, a confidence interval for a difference of two averages μ₁ - μ₂ is calculated. The confidence interval contains only negative numbers. This means that

   
   
   1. TRUE: Μ1 is smaller than μ2
   2. FALSE: Μ1 is greater than μ2
   3. FALSE: Both μ1 and μ2 cannot have been positive
   
   
   1. Μ1 is smaller than μ2: Correct
   2. Μ1 is greater than μ2: Incorrect
   3. Both μ1 and μ2 cannot have been positive: Incorrect