Question

Using the Z table, find the critical value for 

a) α  = .05, two-tailed test

b) α = .01, two tailed test

c) α = .10, two-tailed test

Answer 1

a) $z=-1.96,z=1.96.$

b) $z=-2.58,z=2.58.$

c) $z=-1.64,z=1.64.$