On doing a Paired t test on Phase I pilot, the Black Belt finds that the p-value between treatment groups is 0.420. What should the Black Belt conclude?

OPTIONS

• The change effort has yielded some results
• The change effort needs to be re-checked
• The change effort has not yielded positive results
• The change effort has not changed anything

ANSWER

The change effort has not changed anything

EXPLANATION

If p-value is 0.420, it is non-significant, which means nothing much has changed, so THE FOURTH OPTION is correct.