A Cosmetics manufacturer recently purchased a machine to fill 3-ounce cologne bottles. To test the accuracy of the machine‘s volume setting, 18 trial bottles were run. The resulting volumes (in ounces) for the trials were as follows:
the company does not normally re-calibrate the filling machine for this cologne if the average volume is within 0.04 of 3.00 ounces. Should it re-calibrate ?
Solution
