Find the z critical value of How do I figure this out Find t

Find the z critical value of...

How do I figure this out?

Find the value of z_a. Z0.23 Click the icon to view a table of areas under the normal curve.

Solution

See the Z-table for a value such that P(Z < Z_c) = 1-0.23 = 0.77

You will get - P(Z < 0.74) = 0.77

so, Z critical value = 0.74.