find the critical value for za/2 that corresponds to a degree of confidence of 96.68%

Question

find the critical value for Za/2 that corresponds to a degree of confidence of 96.68%

Answer 1

1 − .9668 = .0332

 

Confidence levels are two-tailed so (1/2)(.0332)  = .0166

 

The normal curve is symmetrical. If asked for critical values  z_{α/2 =} ±2.1296; If asked for the critical value, use 2.1296.