Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-inferential-statistics-61-en_uva-inferential-statistics-61-en
   name	uva-inferential-statistics-61-en
   section	Inferential Statistics
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	0.791
   p-value	0.8953

   Question

   A researcher conducts an experiment in which he expects a difference in average performance on a given task between conditions. He tests his results using a t-test and finds a p-value that is less than the nominal significance level of .05. Why does this statistical result not mean that the research hypothesis is definitely true?

   
   
   1. TRUE: A type I error may have been made.
   2. FALSE: A type II error may have been made.
   3. FALSE: There may be a lack of “power.”
   
   
   1. There may be a Type I error…: Correct
   2. A type II error may have been made…: Incorrect
   3. There may have been a lack of “power”…: Incorrect