SOLUTION: Question: Could someone explain how to do this particular problem? What is the probability that a normal random variable has an outcome within 1 standard deviation of the mean?

Question 919114: Question: Could someone explain how to do this particular problem?
What is the probability that a normal random variable has an outcome within 1 standard deviation of the mean?
Thanks for the help :)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
get a table
look up the area to the left of a score of
look up the area to the left of a score of the area from the area
the is your
as you can see in the table, score of gives an area to the left of it of and score of gives an area to the left of it of
so,
the probability will be %
that's the area under the normal distribution curve that's between a score of and a score of
here is the picture of the area of a score between and shown below:

$$$

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