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mean 12.2, standard dev 2.5: what prop. of pop. is under 10? 
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mean 12.2, standard dev 2.5: what prop. of pop. is under 10?
by rushange on Tue Jun 01, 2010 5:22 am
A normal population has a mean of 12.2 and a standard deviation of 2.5. What proportion of the population is less than 10.0
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by stapel_eliz on Tue Jun 01, 2010 12:04 pm
rushange wrote:A normal population has a mean of 12.2 and a standard deviation of 2.5. What proportion of the population is less than 10.0
What is the z-score for 10.0? What percentage is this?
The z-Score
How Do You Calculate z-Score / Sigma Level?
Standard Normal Distribution
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