Answer
$χ2_{0.025} = 21.920$
$χ2_{0.975} = 3.816$
Work Step by Step
Here we have α = 0.05 and n = 11. df = 12 - 1 = 11
For a two tailed test we have:
α/2 = 0.025
Using Table VII, we have:
$χ2_{0.025} = 21.920$
For the left tail, we have:
1 - α/2 = 0.975
Using Table VII, we have:
$χ2_{0.975} = 3.816$
