fo

fe

(fo − fe)

(fo − fe)2

(fo − fe)2/fe

χ2 table

Decision

68

51.50

16.50

272.25

5.29

3.84

Ho Rejected

35

51.50

−16.50

272.25

5.29

45

61.50

−16.50

272.25

4.43

78

61.50

16.50

272.25

4.43

χ2 = (fo − fe)2/fe

19.43