Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1857-en_uva-distribution-1857-en
   name	uva-distribution-1857-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.941
   p-value	0.7906

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 11, mean = 37, sd = 5.94 Sample 2: n = 16, mean = 27, sd = 6.59. The pooled variance estimator takes the value 40.17. It is tested whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,

   
   
   1. FALSE: A T distribution with 27 degrees of freedom
   2. FALSE: An F-division with 11 and 16 degrees of freedom
   3. TRUE: A T distribution with 25 degrees of freedom
   4. FALSE: An F-division with 10 and 15 degrees of freedom
   
   
   1. A T-distribution with 27 degrees of freedom: Incorrect
   2. An F-division with 11 and 16 degrees of freedom: Incorrect
   3. A T-division with 25 degrees of freedom: Correct
   4. An F-division with 10 and 15 degrees of freedom: Incorrect