A New Machine Is Set or Calibrated to Fill Tubes

Multiple Choice

A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then,once the machine is running,a sample of six tubes is taken every three hours and weighed with the following results: What is the value of the lower control factor of the range?

A) 0
B) 2.115
C) 2.004
D) 3.0