Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufgb-tstatistic-002-en_vufgb-tstatistic-002-en
   name	vufgb-tstatistic-002-en
   section	Inferential Statistics/NHST/Test statistic/t-statistic, Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Interpreting output
   Program
   Language	English
   Level	Statistical Literacy

   Question

   Given is a t-distribution with 23 degrees of freedom.

   A which t-value the 97.5% of the values is at the right side?

   
   
   1. FALSE: -2.500
   2. TRUE: -2.069
   3. FALSE: 2.069
   4. FALSE: 2.500
   
   

   Solution

   Look in the t-table at $df = 23$.

   A t-value of 2.069 gives a right exceedance probability of 2.5%. This means 2.5% of the values lies at the right side. For a t-value of -2.069, 2.5% of the values lies at the left side, and so 97.5% of the values at the right side.

   Advice: Draw the t-distribution and put the t-values and the corresponding exceedance probability of the 4 answer options in the drawing!

   
   
   1. Incorrect
   2. Correct
   3. Incorrect
   4. Incorrect