Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-one-sample-mean-308-en_uva-one-sample-mean-308-en
   name	uva-one-sample-mean-308-en
   section	Inferential Statistics/Parametric Techniques/t-test/One sample mean
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual, Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	4.495
   p-value	0.0186

   Question

   We draw a sample from a normally distributed population N(μ, σ^²), with as outcomes: 20, 20, 36 and 20. Now suppose that σ^² is not is known and estimated using s^². What then is the critical value when testing H₀: μ = 20 against H₁: μ ≠ 20 with 5% risk?

   
   
   1. FALSE: 1.96
   2. FALSE: 2.3534
   3. FALSE: 2.7764
   4. TRUE: 3.1825
   
   
   1. 1.96: Incorrect
   2. 2.3534: Incorrect
   3. 2.7764: Incorrect
   4. 3.1825: Correct