A company has started a six sigma project. The goal is to reduce the defects to zero. They have just done the first initiative and have data collected for comparison to the defect rate before the process improvement to check if the average number of defects has gone down. The analysis below is for this company.

A company has started a six sigma project. The goal is to reduce the defects to zero. They have just done the first initiative and have data collected for comparison to the defect rate before the process improvement to check if the average number of defects has gone down. The analysis below is for this company.

Based on this result, at 5% level of significance __________.