Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1874-en_uva-distribution-1874-en
   name	uva-distribution-1874-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.611
   p-value	0.853

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 12, mean = 44, sd = 9.22 Sample 2: n = 16, mean = 31, sd = 6.85. The pooled variance estimator has the value 63.04. 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 26 degrees of freedom
   2. FALSE: An F-division with 12 and 16 degrees of freedom
   3. FALSE: An F-division with 11 and 15 degrees of freedom
   4. FALSE: A T distribution with 28 degrees of freedom
   
   
   1. A T-distribution with 26 degrees of freedom: Correct
   2. An F-division with 12 and 16 degrees of freedom: Incorrect
   3. An F-division with 11 and 15 degrees of freedom: Incorrect
   4. A T-division with 28 degrees of freedom: Incorrect