as per chegg rules, you can only help with two question? so question 1 i need help with is: Determine both critical z-scores corresponding to a = 0.2 in a two-tail test. neg. crititical z-score =...

R1

Extracted text: as per chegg rules, you can only help with two question? so question 1 i need help with is: Determine both critical z-scores corresponding to a = 0.2 in a two-tail test. neg. crititical z-score = [three decimal accuracy] pos. crititical z-score = [three decimal accuracy] Question 2: Determine the critical z-score corresponding to a = 0.2 in a left-tail test. crititical z-score = [three decimal accuracy]