Model Answers to 07 Hypothesis Testing in Six Sigma Statistics using Minitab 17, Green Belt Edition.

Example 7.11.1 PSS

Measure the PSS of a 1 sample t

Establish the sample size that you would need for a 1 sample t test where you had a Power of 90% under the following conditions

1) A one-way test where you are interested only if the alternate is greater than the null hypothesis
2) You are interested in being able to detect a difference of 3
3) The historical StDev has been 5.



1.  Click Stat <<Power & Sample Size<< 1 Sample t

2.  Complete the menu as shown and click OK to execute the procedure.

The power curve shows that 26 samples will be required to meet the test conditions.