how do you go from z alpha values to alpha?

[rbcc]

Hi,

how do you go from z alpha values to alpha? for example z alpha=0.74 to alpha is 0.23? when there is a normal distribution


Thank You!

 

[tkhunny]

Generally, you read the table backwards or use the inverse function.

How do you get from 0.23 to 0.74? That should explain it.