Posted by **taz** on Tuesday, November 27, 2012 at 9:13am.

A machine on an assembly line fills cans with quantities of food that are normally distributed with a standard deviation of 0.057 pounds. The mean quantity filled is estimated using a sample of 100 cans. What is the difference between the upper and lower limits of the 95% confidence interval for the mean?

A.0.0057 lb.

B.0.011 lb.

C.0.022 lb.

D.0.11 lb.

E.0.22 lb.

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