Problem 1. Textbook Chapter 3. Problem 20. Page 130-131. Instead of the textbook questions answer/do the following, show your work to receive credit: (a) To determine if the process is in control, what type of chart (x-bar chart, R-chart, p-chart, or c-chart) should you be using? (1pt) (b) Write down the UCL, CL, and LCL for a 3-sigmo chart (use chart type from part (a)). (4pts) (c) The next 8 clients' Itineraries contain the following number of errors: 6, 7, 7, 8, 4, 8, 6,5. Plot the 8 values on the control chart and determine, based on the graph, if is the process in control. Explain why or why not. (1pt). 20. A travel agency is concerned with the accuracy and appearance of itineraries prepared for its clients. Defects can include errors in times, airlines, flight numbers, prices, car rental information, lodging, charge card nuinbers, and reservation numbers, as well as typographical errors. As the possible number of errors is nearly infinite, the agency measures the number of errors that do occur. The current process results in an average of three errors per itinerary