Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_uva-mean-587-en_uva-mean-587-en
   name	uva-mean-587-en
   section	Descriptive statistics/Summary Statistics/Measures of Location/Mean
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2.962
   p-value	0.4059

   Question

   Suppose that in a population a stochastic variable d is normally distributed with mean 20 and standard deviation 16. We draw from this population a sample of size n = 4. Then the sample mean

   
   
   1. FALSE: Mean ~ N(μ = 5 , σ = 4)
   2. FALSE: Mean ~ N(μ = 20 , σ = 4)
   3. TRUE: Mean ~ N(μ = 20 , σ = 8)
   4. FALSE: Mean ~ N(μ = 20 , σ = 16)
   
   
   1. Mean ~ N(μ = 5 , σ = 4): Incorrect
   2. Mean ~ N(μ = 20 , σ = 4): Incorrect
   3. Mean ~ N(μ = 20 , σ = 8): Correct
   4. Mean ~ N(μ = 20 , σ = 16): Incorrect