Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-elementary-probability-1003-en_uva-elementary-probability-1003-en
   name	uva-elementary-probability-1003-en
   section	Probability/Elementary Probability
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   We have 60 screws in a box. One of these screws has both a defective head and a defective thread. Three of the screws have a defective head and two have a defective thread. We call the events:‛
   * A = {a defective thread} * B = {a defective head}. * C = {both a defective head and a defective wire}.  Then what is the relative frequency of C?

   
   
   1. TRUE: 1/60
   2. FALSE: 2/60
   3. FALSE: 3/60
   4. FALSE: 4/60
   
   
   1. 1/60: Correct
   2. 2/60: Incorrect
   3. 3/60: Incorrect
   4. 4/60: Incorrect