Question 1182730
confidence level is .82
1 - .82 = .18
that's your alpha.
alpha / 2 = .09
two tailed critical z-score would be equal to plus or minus 1.341 rounded to 3 decimal places.
graphically, that would look like this:


<img src = "http://theo.x10hosting.com/2021/072102.jpg" >