Homework Help: ALGEBRA

Posted by Urgen please help on Sunday, June 3, 2012 at 8:35pm.

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 60 people.
(a) How many would you expect to be between 167 and 183 cm tall?

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

ALGEBRA - bobpursley, Sunday, June 3, 2012 at 8:38pm
http://davidmlane.com/hyperstat/z_table.html is an excellent calculator. Enter mean, std deviation, then look at the shaded areas. You can multipy those by 60 to get numbers.

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