Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-variance-1274-en_uva-variance-1274-en
   name	uva-variance-1274-en
   section	Probability/Elementary Probability/Random variables/Variance
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   Researchers have a taste test to determine whether people can taste whether Cola contains caffeine. We assume that people cannot judge whether caffeine is present. 500 people are randomly chosen as a sample. The answer is coded as X =1 if they say yes, and as X = 0 if they say no. What then is the sample distribution?

   

   
   
   1. TRUE: A
   2. FALSE: B
   3. FALSE: C
   4. FALSE: D
   
   
   1. A: Correct
   2. B: Incorrect
   3. C: Incorrect
   4. D: Incorrect