Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-normal-1351-en_uva-normal-1351-en
   name	uva-normal-1351-en
   section	Distributions/Continuous/Normal
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	-0.775
   p-value	0.9453

   Question

   The diameter of bottle caps has a normal distribution with a mean of 36 mm and a standard deviation of 1 mm. Suppose you take random samples of 10, 20 and 40. Which sample distribution has the smallest standard deviation?

   
   
   1. FALSE: 10
   2. FALSE: 20
   3. TRUE: 40
   4. FALSE: The standard deviations are equally large.
   
   
   1. 10:Incorrect
   2. 20: Incorrect
   3. 40: Correct
   4. The standard deviations are equally large…: Incorrect