Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-central-limit-theorem-1282-en_uva-central-limit-theorem-1282-en
   name	uva-central-limit-theorem-1282-en
   section	Distributions/Limit Theorems/Central Limit Theorem
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	3
   p-value	0.311

   Question

   To repair a refrigerator you need time X. The distribution of the random variable X has a mean of 1 hour with a standard deviation of 1 hour. Your company has 70 such refrigerators. What then is the probability that the average repair job takes longer than 50 minutes?

   
   
   1. FALSE: 0,08
   2. FALSE: 0,70
   3. FALSE: 0,83
   4. TRUE: 0,92
   
   
   1. 0.08: Incorrect
   2. 0.70: Incorrect
   3. 0.83: Incorrect
   4. 0.92: Correct