1. Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is u = 128.5 and the standard deviation is Q = .4 A. B. Construct the x chart for this process if samples of size 6 are to be used. Is the process in control for a sample providing the following data? 128.8 C. 128.2 129.1 128.7 128.4 129.2 Is the process in control for a sample providing the following data? 129.3 128.7 128.6 129.2 129.5 129.0 2. The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R and x charts. 3. The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. The company is interested in using control charts to monitor the temperature of its manufacturing process. Construct the x chart and R chart. What conclusions can be made about the quality of the process