Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufgb-tstatistic-008-en_vufgb-tstatistic-008-en
   name	vufgb-tstatistic-008-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.

   At what t value do 97.5% of the values lie on the right-hand 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-hand overshoot probability of 2.5%. This means that 2.5% of the values lie on the right. For a t value of -2.069, there are 2.5% of the values on the left, and therefore 97.5% of the values on the right.

   Tip: Draw the t distribution and put in the t values and corresponding exceedance probabilities of the 4 answer options!

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