Harry Coates Wants to Construct and R Charts at the Bag-Filling

question 21

Essay

Harry Coates wants to construct and R charts at the bag-filling operation for Meow Chow cat food. He knows that when the filling operation is functioning correctly, bags of cat food should average 50.00 pounds and 5-bag samples should have an average range of .330 pounds.
Harry had twenty 5-bag samples taken at 2-hour intervals and the sample means and ranges are shown below. Determine the center lines and upper and lower control limits for the and R charts.

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Definitions:

Correct Hybridization

The mixing of atomic orbitals to form new hybrid orbitals, explaining the geometry of molecular bonding.

Atom

An atom is the smallest unit of matter that retains the identity of a chemical element, consisting of a nucleus surrounded by electrons.

Molecule

The smallest unit of a chemical compound that can exist; it consists of a group of atoms bonded together, representing the compound's chemical properties.

Relative Frequencies

The proportion of occurrences of a specific value relative to the aggregate count of observations, frequently shown as a percentage.