SOLUTION: What percentage of the area of the standard normal distribution is between z = -2.0 and z= +2.00? How do we know this?
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Question 456592: What percentage of the area of the standard normal distribution is between z = -2.0 and z= +2.00? How do we know this? Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! .9545
We know this because a very smart person integrated the formula for the curve so that we could know the area under it.
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Ed