Posted by angela on Thursday, November 7, 2013 at 9:03pm.
Assume that women's heights are normally distributed with a mean given by u=64.6 in
and a standard deviation given by 0=2.8in.
a) If 1 woman is randomly selected, find the probability that her height is less than 65in.
b) If 49 women are randomly selected, find the probability that they have a mean height less than 65 in.

statistics  Reiny, Thursday, November 7, 2013 at 9:43pm
great webpage for your problem, just plug in the values that you have
http://davidmlane.com/hyperstat/z_table.html

statistics  Kuai, Thursday, November 7, 2013 at 10:42pm
a.
z = (6564.6)/(2.8/sqrt(1))
z = 0.14
b.
z = (6564.6)/(2.8/sqrt(49))
z = 1
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