Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-independent-samples-means-249-en_uva-independent-samples-means-249-en
   name	uva-independent-samples-means-249-en
   section	Inferential Statistics/Parametric Techniques/t-test/Independent samples means
   type	schoice
   solution	FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	4.027
   p-value	0.1099

   Question

   One tests the hypothesis that the average IQ score in a given population is equal to 120, against the alternative hypothesis that that mean is greater than 120. In both cases, the standard deviation is equal to 17. In a random sample of n = 49 individuals, one finds a sample mean of 125. The hypothesis that the population mean is equal to 120 can then be rejected at

   
   
   1. FALSE: Α = 0.01
   2. TRUE: Α = 0.05, but not at α = 0.01
   3. FALSE: Α = 0.10, but not at α = 0.05
   
   
   1. Α = 0.01: Incorrect
   2. Α = 0.05, but not at α = 0.01: Correct
   3. Α = 0.10, but not at α = 0.05: Incorrect