Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-bayesian-statistics-987-en_uva-bayesian-statistics-987-en
   name	uva-bayesian-statistics-987-en
   section	Inferential Statistics/Bayesian Statistics
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   A company A owns three factories, namely A₁, A₂ and A₃, TRUE where razors of the same type are made. During a given period, factory A₁ made 2000 shavers, of which 200 were defective, factory A₂ made 5000 devices during that period, of which 300 were defective, and A₃ made 3000 devices, including 150 defective ones. Together they made 10,000 appliances during this period. A inspector randomly chooses a shaver from the total production. How high is the probability that this device is defective (D)?

   
   
   1. FALSE: 0,015
   2. FALSE: 0,02
   3. FALSE: 0,03
   4. TRUE: 0,065
   
   
   1. 0.015: Incorrect
   2. 0.02: Incorrect
   3. 0.03: Incorrect
   4. 0.065: Correct