Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-random-variables-1076-en_uva-random-variables-1076-en
   name	uva-random-variables-1076-en
   section	Probability/Elementary Probability/Random variables
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	1.557
   p-value	0.8556

   Question

   Which of the following characteristics of a commercial news broadcast on TV are discrete stochastic variables?

   I. Number of commercial breaks (e.g., three blocks).™. II. Length of the first commercial break (e.g., 4 minutes).Ÿ. III. Whether fatal car accidents were reported (0 = there were no fatal accidents reported, 1 = at least one fatal accident was reported).‖ IV. Whether rain was predicted (0 = ‘no rain’ was predicted, 1 = ‘rain’ is predicted).

   
   
   1. FALSE: I, II and III are discrete stochastic variables.
   2. FALSE: I, II and IV are discrete stochastic variables.
   3. TRUE: I, III and IV are discrete stochastic variables.
   4. FALSE: II, III and IV are discrete stochastic variables.
   
   
   1. I, II and III are discrete stochastic variables…: Incorrect
   2. I, II and IV are discrete stochastic variables…: Incorrect
   3. I, III and IV are discrete stochastic variables…: Correct
   4. II, III and IV are discrete stochastic variables…: Incorrect