Question 1177911: Describe the normal distribution in terms of z-score and the probability of an outcome based on its z-score.
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! The normal distribution has a mean=z-score of 0
greater than the mean are positive z-scores, where nearly all the probability is between z-scores of 0 and +3.
less than the mean is the opposite between z-scores of -3 and 0
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This is an exponential curve where just over 68% of the probability is between -1 and +1 z-scores, 95% of the probability is between z scores of -1.96 and +1.96, and 99.7% is between z-scores of -3 and +3.
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