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August 31, 2014

Homework Help: math

Posted by apryl on Wednesday, September 7, 2011 at 6:31pm.

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 40 people.
(a) How many would you expect to be between 169 and 181 cm tall?
127 27


(b) How many would you expect to be taller than 170 cm?
232 32

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