# Math

You survey 1000 new home buyers and find that the mean price was \$185,000 and the standard deviation was \$20,000. How many paid more than \$210,000?

1. 210000 - 185000 = 25000

25000 / 20000 = 1.25 s.d. above the mean
... this is the z-score

use a table to find the fraction above this z-score

posted by Scott

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