SOLUTION: a set of data items is normally distributed with a mean of 80 and a standard deviation of 9. Convert 80 to a z-score
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Question 443722: a set of data items is normally distributed with a mean of 80 and a standard deviation of 9. Convert 80 to a z-score Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! The mean has a z-score of 0.
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Technically, the z-score = (score - mean) / standard deviation.
But we do not know the standard deviation.
For a score of 80 in this case, the numerator = (80 - 80) = 0.
We know that 0 divided by any number is 0, so we don't really need to know the standard deviation.
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Done.
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