Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-conditional-probability-539-en_uva-conditional-probability-539-en
   name	uva-conditional-probability-539-en
   section	Probability/Elementary Probability/Conditional probability
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   The following cross tabulation includes data from 200 individuals for two variables A and B.

   ——- ——- ——- ——- A = 1 A = 2 A = 3 B = 1 50 36 64 B = 2 20 12 18 ——- ——- ——- ——-

   We randomly draw someone from the 200 people. For this person: P(A=1 ∪ A=2 B=1) is equal to

   
   
   1. FALSE: 0
   2. FALSE: 0.43
   3. TRUE: 0.57
   4. FALSE: 0.59
   
   
   1. 0: Incorrect
   2. 0.43: Incorrect
   3. 0.57: Correct
   4. 0.59: Incorrect