調查三個生產石綿相關產品工廠的工人肺部病變數據如下:
肺部病變
工廠
有
無
1
10
220
2
20
130
3
50
90
請問工人肺部病變是否與工廠有關?
=
α
0.05(25 分)
2
95
.0,3
χ
=7.815,
=9.348,
=0.352,
=0.216
2
975
.0,3
χ
2
05
.0,3
χ
2
025
.0,3
χ
2
95
.0,2
χ
=5.991,
=7.378,
=0.103,
=0.051,
2
975
.0,2
χ
2
05
.0,2
χ
2
025
.0,2
χ
2
95
.0,1
χ
=3.841,
=5.024,
=0.004,
=0.001
2
975
.0,1
χ
2
05
.0,1
χ
2
025
.0,1
χ