Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1875-en_uva-distribution-1875-en
   name	uva-distribution-1875-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.945
   p-value	0.7855

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 18, mean = 46, sd = 8.01 Sample 2: n = 18, mean = 48, sd = 10.28. The pooled variance estimator takes the value 84.92. 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 34 degrees of freedom
   2. FALSE: A T distribution with 36 degrees of freedom
   3. FALSE: An F-division with 18 and 18 degrees of freedom
   4. FALSE: An F-division with 17 and 17 degrees of freedom
   
   
   1. A T-distribution with 34 degrees of freedom: Correct
   2. A T-division with 36 degrees of freedom: Incorrect
   3. An F-division with 18 and 18 degrees of freedom: Incorrect
   4. An F-division with 17 and 17 degrees of freedom: Incorrect