Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufgb-ancova-001-en_vufgb-ancova-001-en
   name	vufgb-ancova-001-en
   section	Inferential Statistics/Parametric Techniques/ANOVA/ANCOVA
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Case, Calculation
   Language	English
   Level	Statistical Thinking

   Question

   Consider an experiment. In it, the effect of Social Stress (Factor with two groups: $z_{1}$) on Performance (Dependent variable: $y$ ) is studied. The researchers used a standard ANCOVA, controlling for Neuroticism (Covariate: $x$, with $\bar{x} = 20$). The following estimated regression equation is found: $\hat{y}=25+0.8_{x}+2z_{1}$. Calculate the adjusted means for both groups of the Factor.

   
   
   1. FALSE: 25 and 27.
   2. FALSE: 20 and 25.
   3. FALSE: 16 and 20.
   4. TRUE: 41 and 43.