Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-general-rules-1101-en_uva-general-rules-1101-en
   name	uva-general-rules-1101-en
   section	Probability/Elementary Probability/General Rules
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.176
   p-value	0.8814

   Question

   A pure coin is thrown up three times. Suppose event A = all times lies head up. Then what is the complement of A?

   
   
   1. FALSE: Three times head also lies up.
   2. TRUE: At least once, coin lies up.
   3. FALSE: At least two times tails are up.
   4. FALSE: All times tails are up.
   
   
   1. Three times also lies head up…: Incorrect
   2. At least one time coin lies upward: Correct
   3. At least two times coin lies up…: Incorrect
   4. All times coins lie face up: Incorrect