Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1872-en_uva-distribution-1872-en
   name	uva-distribution-1872-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.942
   p-value	0.7875

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 13, mean = 44, sd = 9.8. Sample 2: n = 17, mean = 36, sd = 8.06. The pooled variance estimator takes the value 78.28. It is tested whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,

   
   
   1. FALSE: An F-distribution with 12 and 16 degrees of freedom
   2. TRUE: A T distribution with 28 degrees of freedom
   3. FALSE: An F-division with 13 and 17 degrees of freedom
   4. FALSE: A T distribution with 30 degrees of freedom
   
   
   1. An F-distribution with 12 and 16 degrees of freedom: Incorrect
   2. A T-division with 28 degrees of freedom: Correct
   3. An F-division with 13 and 17 degrees of freedom: Incorrect
   4. A T-division with 30 degrees of freedom: Incorrect