What are the critical zvalues for a twotailed hypothesis tes

What are the critical z-values for a two-tailed hypothesis test if the significance level is 0.01?

Solution

As it is two tailed, we cut 0.01 into half, 0.005, then look for the table value for the corresponding z.

We will see that

zcrit = +/- 2.58 [ANSWER]