Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-random-variables-340-en_uva-random-variables-340-en
   name	uva-random-variables-340-en
   section	Probability/Elementary Probability/Random variables
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2.381
   p-value	0.4838

   Question

   It was determined of 200 people whether they were left- or right-handed, and how well they are artistically developed (good, moderate, poor). The results are shown in the cross tabulation below.

   ————– ————————- ——- ——– Artistic development Good Moderate Poor Right-handed 42 72 56 Left-handed 18 8 4 ————– ————————- ——- ——–

   If we randomly draw one of these 200 individuals, what is the probability that this person is right-handed or artistically poorly developed (or both) is?

   
   
   1. FALSE: 0.28
   2. FALSE: 0.33
   3. TRUE: 0.87
   4. FALSE: 0.93
   
   
   1. 0.28: Incorrect
   2. 0.33: Incorrect
   3. 0.87: Correct
   4. 0.93: Incorrect