A company produces large bottles of liquid vitamins for veterinary use. The bottles are filled on average with 971 milliliters and the filling process has a standard deviation of 19.6 milliliters. The company wishes to monitor the process on an ongoing basis by taking sample of 84 bottles per day and plotting the daily average fill volume on a statistical process control chart.
What are the 97% control limits for average bottle volume?
Select the answer closest to what you calculated. [Note: the answer choices are scrambled and NOT in any particular numerical order.]
Select one:
a. [966.980 ml, 975.020 ml]
b. [964.584 ml, 977.416 ml]
c. [928.468 ml, 1013.532 ml]
d. [934.152 ml, 1007.848 ml]
e. [966.359 ml, 975.641 ml]