Discuss the below:
Q: Customers were waiting in line too long so data was collected. The mean time was 28 minutes. One month later a sample of 127 customers was selected. The mean wait time recorded was 26.9 minutes and the S.D. of the sampling was 8 minutes. Using the .02 level of significance, conduct a 5 step hypothesis testing to determine if the new processes significantly reduced the wait time.