Question

A quality-control engineer wants to find out whether or not a new machine that fills bottles with liquid has less variability than the machine currently in use. The engineer calibrates each machine to fill bottles with 16 ounces of a liquid. After running each machine for 5 hours, she randomly selects 15 filled bottles from each machine and measures their contents. Use the data below.

Old Machine
16.01
16
16.04
16.1
15.92
16.04
16.07
16.05
16.01
16.16
15.96
15.89
15.91
16
15.92

New Machine
16.02
15.95
16
16.06
16.08
15.96
15.99
15.97
16.05
15.96
16.05
16.02
16.03
15.94
15.95

State the Requirements to perform this test:

Perform a Hypothesis Test:

Answer 1