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Example continued

Day                  Freq.         Expec.      (fofe)2/fe

Monday120 89         10.80

Tuesday  45 89         21.75

Wednesday            60 89           9.45

Thursday  90 89           0.01

Friday          130 89         18.89

Total           445445         60.90

Because the computed value of chi-square is greater than the critical value, H0 is rejected.

We  conclude that there is a difference in the  number of workers absent by day of the week.

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