# Given: A normally distributed population with u=150 and o=25. If sample of size 100 are drawn at random, what is

###### Question:

Given: A normally distributed population with u=150 and o=25. If sample of size 100 are drawn at random, what is the probablity of obtaining.... A. a sample mean of 156 or higher B. A mean that differs from 150 by 7 points or more For part A the answer should be .00820 (not sure how to get there from the answer of 2.4 that I got) same for part b, how does 2.8 end up equaling .00256?

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