A Lean Six Sigma team has implemented a change to a mortgage application process to improve cycle time. The team wants to verify that the change represents a significant improvement, and wants to be 95% certain that their conclusion is correct. What is the hypothesis to be tested, and how is the desire for 95% certainty expressed? A Accept null hypothesis that means are different, 5% confidence level. B Reject null hypothesis that means are equivalent, 95% confidence level. C Accept alternate hypothesis that means are equivalent, 95% confidence interval. D Reject alternate hypothesis that means are different, 95% confidence interval. E Accept null hypothesis that means are equivalent, 5% significance level