fo

fe

(fo − fe)

(fo − fe)2

(fo − fe)2/fe

χ2 table

Decision

23

17.70

5.30

28.07

1.59

3.84

Ho Rejected

3

17.70

−14.70

216.15

12.21

9

6.70

2.30

5.28

0.79

12

6.70

5.30

28.07

4.19

χ2 = (fo − fe)2/fe

18.77