Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1895-en_uva-distribution-1895-en
   name	uva-distribution-1895-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.941
   p-value	0.7911

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 14, mean = 49, sd = 8.03 Sample 2: n = 15, mean = 38, sd = 12.76. The pooled variance estimator takes the value 115.47. It is tested whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,

   
   
   1. TRUE: A T distribution with 27 degrees of freedom
   2. FALSE: An F-division with 13 and 14 degrees of freedom
   3. FALSE: A T distribution with 29 degrees of freedom
   4. FALSE: An F-division with 14 and 15 degrees of freedom
   
   
   1. A T-distribution with 27 degrees of freedom: Correct
   2. An F-division with 13 and 14 degrees of freedom: Incorrect
   3. A T-division with 29 degrees of freedom: Incorrect
   4. An F-division with 14 and 15 degrees of freedom: Incorrect