(Suppose Z a standar vaiable.) 95% of all observations will be less than?

Question

Suppose Z is a standard normal variable.) 95% of all observations will be less than?

Answer 1

Look in your table and find p=0.95, the Z value for this is what you want.

I get 1.645

Answer 2

To get all the data within 95 % on either side of the mean..
Since the normal curve is symetric, and measured from the center = 0, divide .95 by 2 and get .475.
Find .475 in the body of the table and read the corresponding z.
I.96
To cut off the top 5% of the data, the answerer before me is right. 1.645
I'll take those 40 lashes with a wet noodle now.