Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-600-en_uva-distribution-600-en
   name	uva-distribution-600-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.972
   p-value	0.7803

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 18, mean = 38, sd = 5.43 Sample 2: n = 13, mean = 46, sd = 9.04. The pooled variance estimator takes the value 51.10. 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 31 degrees of freedom
   2. TRUE: A T-division with 29 degrees of freedom
   3. FALSE: An F-division with 12 and 17 degrees of freedom
   4. FALSE: An F-division with 13 and 18 degrees of freedom
   
   
   1. A T-distribution with 31 degrees of freedom: Incorrect
   2. A T-division with 29 degrees of freedom: Correct
   3. An F-division with 12 and 17 degrees of freedom: Incorrect
   4. An F-division with 13 and 18 degrees of freedom: Incorrect