# MATH; STANDARD DEVIATION

suppose that prices of a certain model of new homes are normally distributed with a mean of \$150,000 use 68-95-99.7 rule to find the percentage of buyers who paid:

between \$150,000 and \$152,000 if the standard deviation is \$1200

1. you can plug in your numbers and play around with Z table stuff at

http://davidmlane.com/hyperstat/z_table.html

posted by Steve

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