Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufsw-criticalvalue-0137-en_vufsw-criticalvalue-0137-en
   name	vufsw-criticalvalue-0137-en
   section	inferential statistics/nhst/significance level/critical value
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE, FALSE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical literacy

   Question

   A researcher is interested in the percentage of Dutch people who sometimes feel unsafe on the street. In a survey of 81 people 37.5% answered that they sometimes felt unsafe on the street. He wants to calculate the 95% confidence interval of the percentage of Dutch people who sometimes feel unsafe on the street.

   In this case, what is the critical z-value or critical t-value that belongs to a 95% confidence level? Round to 2 decimal places.

   
   
   1. FALSE: 1,99
   2. TRUE: 1,96
   3. FALSE: 2,58
   4. FALSE: 2,33
   5. FALSE: 2,98
   6. FALSE: 2,64
   
   
   1. False
   2. True
   3. False
   4. False
   5. False
   6. False