Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1864-en_uva-distribution-1864-en
   name	uva-distribution-1864-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2.031
   p-value	0.5688

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 11, mean = 43, sd = 8.06 Sample 2: n = 14, mean = 55, sd = 10.02. The pooled variance estimator takes the value 84.99. 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 10 and 13 degrees of freedom
   2. FALSE: A T-division with 25 degrees of freedom
   3. FALSE: An F-division with 11 and 14 degrees of freedom
   4. TRUE: A T distribution with 23 degrees of freedom
   
   
   1. An F-distribution with 10 and 13 degrees of freedom: Incorrect
   2. A T-division with 25 degrees of freedom: Incorrect
   3. An F-division with 11 and 14 degrees of freedom: Incorrect
   4. A T-division with 23 degrees of freedom: Correct