Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-independent-events-342-en_uva-independent-events-342-en
   name	uva-independent-events-342-en
   section	Probability/Elementary Probability/General Rules/Independent events
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	3
   p-value	0.311

   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 ————– ————————- ——- ——–

   Given the following two assertions about these data:______________. 1: Left-handedness and right-handedness are independent, because P(right-handed ∩ left-handed) = 0. 2: Being artistically well-developed and left-handedness are independent because P(left-handed ∩ artistically well developed) = P(artistically well developed). Which of these statements is correct?

   
   
   1. FALSE: Assertions 1 and 2 are both correct.
   2. FALSE: Assertion 1 is true, assertion 2 is false.
   3. FALSE: Assertion 1 is false, assertion 2 is true.
   4. TRUE: Assertions 1 and 2 are both false.
   
   
   1. Assertions 1 and 2 are both correct: Incorrect
   2. Assertion 1 is correct, assertion 2 is incorrect: Incorrect
   3. Assertion 1 is incorrect, assertion 2 is correct: Incorrect
   4. Assertions 1 and 2 are both incorrect: Correct