Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufsw-paired_samples-1164-en_vufsw-paired_samples-1164-en
   name	vufsw-paired samples-1164-en
   section	inferential statistics/parametric techniques/t-test/paired samples
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical reasoning

   Question

   The medical faculty of the VU conducts a study into the effectiveness of a product that should lead to weight reduction. For this purpose, the weight (in kilograms) for the use of the product is compared with the weight in a group of 20 people after the product has been used for three weeks by the persons examined.

   Why should the Independent t-test not be used for this analysis?

   
   
   1. FALSE: The weight is not measured on a ratio scale.
   2. FALSE: The researcher’s hypothesis is that the product is effective, so that the degree of weight reduction and the use of the product are not independent of each other.
   3. TRUE: The two samples that are compared are the same persons, so they are not independent of each other.
   4. FALSE: The two samples that are compared are measured by the same faculty, so they are not independent of each other.
   
   

   Solution

   Because it are the same people the sample is not independent.
   The two samples that are compared are the same persons, so they are not independent of each other.

   Levels of Difficulty
   Easy

   M&T Hypothesis testing: means
   Default value

   M&T Model selection
   Default value

   
   
   1. False
   2. False
   3. True
   4. False