Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-normal-1363-en_uva-normal-1363-en
   name	uva-normal-1363-en
   section	Distributions/Continuous/Normal
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   An entrance exam has scores that are approximately normally distributed with a mean of 500 and a standard deviation of 100. If you select randomly select 40 scores, what is the distribution of the mean of this sample?

   
   
   1. FALSE: It is a normal distribution with a mean of 20 and standard error of 2.5.
   2. FALSE: It is a normal distribution with a mean of 250 and standard error of 50.
   3. FALSE: It is a normal distribution with a mean of 500 and standard error of 2.5.
   4. TRUE: It is a normal distribution with a mean of 500 and standard error of 15.8.
   
   
   1. It is a normal distribution with a mean of 20 and standard error of 2.5: Incorrect
   2. It is a normal distribution with a mean of 250 and standard error of 50…: Incorrect
   3. It is a normal distribution with a mean of 500 and standard error of 2.5: Incorrect
   4. It is a normal distribution with a mean of 500 and standard error of 15.8: Correct