Lean Six Sigma Green Belt (GMC-LSS-GB)

Exercise:

Exercise objective: Utilize what you have learned to conduct an analysis a paired t-test using MINITABTM.

• 1. A corrugated packaging company produces material that uses creases to make boxes easier to fold.  It is a Critical to Quality characteristic to have a predictable Relative Crease Strength.  The quality manager is having her lab test some samples labeled 1-11.  Then those same samples are being sent to her colleague at another facility who will report their measurements on those same 1-11 samples.

• 2. The US quality manager wants to know with 95% confidence what the average difference is between the lab located in Texas and the lab located in Mexico when measuring Relative Crease Strength.

3. Use the data in columns “Texas” & “Mexico” in “HypoTestStud.mtw” to determine the answer to the quality manager’s question.