Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-conditional-probability-615-en_uva-conditional-probability-615-en
   name	uva-conditional-probability-615-en
   section	Probability/Elementary Probability/Conditional probability
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   Of 200 individuals, gender and original hair color were determined. The results are shown in the following cross tabulation:

   ——- ——- ——- ——- —— —– black brown blond red woman 30 26 54 10 120 male 10 24 36 10 80 40 50 90 20 200 ——- ——- ——- ——- —— —–

   One person is randomly drawn from these 200 individuals.Ê We define the following two events A: the person’s original hair color is black. B: the person is of the female gender.P(A 、B) =

   
   
   1. FALSE: 75%
   2. FALSE: 20%
   3. FALSE: 15%
   4. TRUE: 25%
   
   
   1. 75%: Incorrect
   2. 20%: Incorrect
   3. 15%: Incorrect
   4. 25%: Correct