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April 17, 2014

April 17, 2014

Posted by **ryee** on Sunday, April 24, 2011 at 6:56pm.

(a) what percentage of the healthy newborns will weigh more than 3,250 grams?

(b) what weightswould 95% of all healthy newborns tend to fall between?

(c)what is the z score for an infant who weighs 2,750 grams?

- statistics -
**drwls**, Sunday, April 24, 2011 at 7:18pm(c) Z = -750/500 = -1.25

For the others, you need a normal distribution probability calculator or table.

There are many online. There is a good one at

http://www.stat.tamu.edu/~west/applets/normaldemo.html

It says that the answer to (a) is 69.15%

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