Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-distribution-1884-en_uva-distribution-1884-en
   name	uva-distribution-1884-en
   section	Distributions/Continuous/t-distribution
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.792
   p-value	0.82

   Question

   From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 11, mean = 53, sd = 7.66 Sample 2: n = 18, mean = 51, sd = 7.47. The pooled variance estimator takes the value of 56.87. 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 27 degrees of freedom
   2. FALSE: A T distribution with 29 degrees of freedom
   3. FALSE: An F-division with 10 and 17 degrees of freedom
   4. FALSE: An F-division with 11 and 18 degrees of freedom
   
   
   1. A T-distribution with 27 degrees of freedom: Correct
   2. A T-division with 29 degrees of freedom: Incorrect
   3. An F-division with 10 and 17 degrees of freedom: Incorrect
   4. An F-division with 11 and 18 degrees of freedom: Incorrect