Posted by michelle on .
The diameters of a wooden dowel produced by a new machine are normally distributed with a mean of 0.55 inches and a standard deviation of 0.01 inches. What percent of the dowels will have a diameter less than 0.57?

math 
Reiny,
I filled in the data in my favourite applet
http://davidmlane.com/hyperstat/z_table.html
and it gave me 97.7%