Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufsw-chi-squared-1219-en_vufsw-chi-squared-1219-en
   name	vufsw-chi-squared-1219-en
   section	inferential statistics/nhst/test statistic/chi-squared
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	performing analysis
   Program	calculator
   Language	English
   Level	statistical thinking

   Question

   Consider the following contingency table with the variable income in the rows and the variable job satisfaction in the columns. The values in the cells are the observed frequencies. The values in parentheses are the expected frequencies.

   		Job satisfaction
   		Unsatisfied	Satisfied
   Income	Below modal	20 (15)	10 (15)
   	Modal	20 (20)	20 (20)
   	Above modal	10 (15)	20 (15)

   Perform a Chi-square (X²) test for the data presented in the table. What is the correct conclusion with α = 0.05?

   
   
   1. TRUE: There is a statistical association between income and satisfaction, because the observed X² is smaller than the critical X².
   2. FALSE: There is no statistical association between income and satisfaction, because the observed X² is smaller than the critical X².
   3. FALSE: There is a statistical association between income and satisfaction, because the observed X² is greater than the critical X².
   4. FALSE: There is no statistical association between income and satisfaction, because the observed X² is greater than the critical X².
   
   
   1. True
   2. False
   3. False
   4. False