Please help and answer specifically question 2, assuming the process will be out of control.

QUESTIONS 1. Construct x-bar and R control charts to monitor service in the drive-through window. Plot the control charts and explain whether the process is in control or not. 2. What is the most appropriate TQM tool you recommend to management if the process is out of control to improve customer service? Support your recommendation.

The Dicks' Burgers restaurant in Seattle has followed the lead of large franchise restaurants such as Burger King, McDonald's and Wendy's by building drive-through windows in one of its locations. However, instead of making Dicks more competitive, the drive-through window has been a source of continual problems and has lost market share to its competitors in that location. The top management has implemented a quality management program to identify and correct potential problems. Using the TQM tools, the quality team made up of employees, managers, and quality specialists at the headquarters have determined that the main problem is slow and erratic service in the drive-through window. Studies show that the time a customer arrives at the window to the time the order is received averages 2.6 minutes. To be competitive, management believes service time should be reduced to at least 2.0 minutes, ideally 1.5 minutes. These quality improvements were implemented over several months, and their effect was immediate. The service speed was improved and the market share increased by 5% at this location. To maintain quality service, ensure that service time remained fast and continue to improve service, the quality team decided to use statistical process control charts on a continuing basis. They collected seven service time observations daily over 18 days as follows