MATH; STANDARD DEVIATION
posted by CHIN
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000 use 689599.7 rule to find the percentage of buyers who paid:
between $150,000 and $152,000 if the standard deviation is $1200

Steve
you can plug in your numbers and play around with Z table stuff at
http://davidmlane.com/hyperstat/z_table.html
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math: 689599.7 rule
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000 use the rule to find the percentage of buyers who paid: between $150,000if the standard deviation is $1200 
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