Posted by Sue 6f on .
A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15.
(f) What is the probability that the sample mean will be within 6 units of the mean? (Give your answer correct to four decimal places.)

math help 
PsyDAG,
Between 40 and 52.
Use process indicated in later post.