SOLUTION: Assume that a randomly selected subject in given a bone density test. Those test score are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability

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Question 1069925: Assume that a randomly selected subject in given a bone density test. Those test score are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability that a given score is between -2.15 and 3.94 and draw a sketch of the region.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z scores for both values,
z%5B1%5D=%28x-mu%29%2Fsigma=%28-2.15-0%29%2F1=-2.15
z%5B2%5D=%28x-mu%29%2Fsigma=%283.94-0%29%2F1=3.94
P=P%28z%5B2%5D%29-P%28z%5B1%5D%29
P=0.999959-0.015778
P=0.984182
.