Homework Help: statistics

Posted by Isabella on Thursday, June 28, 2012 at 3:51pm.

The weight of a product is normally distributed with a mean of 4 ounces and a variance of .25 "sq ounces." The company wants to classify the unit as a scrap in a maximum of 1% of the units if the weight is below a desired value. Determine the desired weight such that no more than 1% of the units are below it.

statistics - Josh, Thursday, June 28, 2012 at 5:49pm
4-(2.33)(√.25)=2.835 ounces
statistics - Crystal, Saturday, June 30, 2012 at 5:37pm
Where did you get this equation from?
statistics - guest, Monday, September 10, 2012 at 7:05pm
Use excel to find the inverse of .01 to get the z value of -2.32635
and plug that into the equation for the z=(x-mu)/SD

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