Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If #P(-e<z<e)=0.2128#, what is #e#?
1 Answer
May 4, 2017
Explanation:
we have
The Normal Distribution tables give probabilities for
by the symmetrical property of the Normal.
now to use the tables we have to add
Using the tables in reverse we find