Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1866-en_uva-distribution-1866-en
   name	uva-distribution-1866-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2.005
   p-value	0.5802

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 16, mean = 43, sd = 5.77 Sample 2: n = 15, mean = 41, sd = 3.31. The pooled variance estimator takes the value 22.51. 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 15 and 14 degrees of freedom
   2. FALSE: A T distribution with 31 degrees of freedom
   3. TRUE: A T distribution with 29 degrees of freedom
   4. FALSE: An F-division with 16 and 15 degrees of freedom
   
   
   1. An F-distribution with 15 and 14 degrees of freedom: Incorrect
   2. A T-division with 31 degrees of freedom: Incorrect
   3. A T-division with 29 degrees of freedom: Correct
   4. An F-division with 16 and 15 degrees of freedom: Incorrect