Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-normal-778-en_uva-normal-778-en
   name	uva-normal-778-en
   section	Distributions/Continuous/Normal
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.175
   p-value	0.8824

   Question

   The scores on a Citoto test of arithmetic for children in the last group of elementary school are normally distributed and have a national mean of 20 and a standard deviation of 5. What is the probability that in a random sample of 9 children a mean score between 22 and 24 (in the subinterval 22 to 24) be found?

   
   
   1. TRUE: 0.48.
   2. FALSE: 0.50.
   3. FALSE: 0.98.
   
   
   1. 0.48.: Correct .
   2. 0.50.: Incorrect
   3. 0.98.: Incorrect