O " . . 1. A bank with 25 bank branches, located throughout Nashville, TN, has the business objective of developing an improved process for serving customers between the busy after Work hours of 5- 6 pm.~You are a bank manager and you decide to rst study the waiting time in the Eurrent process to understand if there Is evidence of a statistically signicant difference in the mean waiting time between two bank branches. The waiting time is defined as the number of minutes that elapses from when the customer enters the line until he or . she reaches the teller window. Data are collected from a random sample of 15 customers from your busiest branch in west Nashville and stored in the Bank. xis workbook in the column \"Bank 1 Waiting Time". - Data are also collected from a different sample of 15 randomly selected customers, irom your branch located in the east side of Nashville, TN and this data are stored' In the Bank. xis workbook' In the column "Bank 2 Waiting Time". Hint: Your , . rain data comes from the samples you have selected. You have no population parameters/or data to 11an this scenario. a. What is the null hypothesis and alterative hypothesis statements? I ' b. is there evidence that there Is a difference in the mean waiting time between the two branches. (Use.a= O 05)? ' c. Interpret the results of your investigation d. Whyls an investigation, such as the hypothesis test you just performed, important in this situation? How does a bank manager use this data and analysis in a business setting? 7 g