Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1878-en_uva-distribution-1878-en
   name	uva-distribution-1878-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.753
   p-value	0.8314

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 11, mean = 37, sd = 5.78 Sample 2: n = 15, mean = 54, sd = 9.24. The pooled variance estimator takes the value of 63.72. 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 24 degrees of freedom
   2. FALSE: An F-division with 10 and 14 degrees of freedom
   3. FALSE: An F-division with 11 and 15 degrees of freedom
   4. FALSE: A T distribution with 26 degrees of freedom
   
   
   1. A T-distribution with 24 degrees of freedom: Correct
   2. An F-division with 10 and 14 degrees of freedom: Incorrect
   3. An F-division with 11 and 15 degrees of freedom: Incorrect
   4. A T-division with 26 degrees of freedom: Incorrect