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Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows. Use three sigma control limits. SAMPLE NUMBER 1 2 3 4 5 6 7 8 9 READINGS (IN OHMS) 992 992 1000 1027 978 994 985 1018 1021 998 1018 994 974 1022 999 1026 1000 1012 1030 991 974 987 985 987 1005 973 1011 1001 983 1024 1012 977 990 1004 973 999 990 1018 1024 1001 998 976 1029 980 1024 1020 1020 976 1026 1018 1029 971 982 979 982 989 991 988 980 994 11 12 13 15 a. Calculate the mean and range for the above samples (Round "Mean" to 2 decimal places and "Range" to the nearest whole number.) Range Sample Number 1 2 3 1 3 28 12 2 24 5 a. Calculate the mean and range for the above samples. (Round "Mean" to 2 decimal places and "Range" to the nearest whole number.) Sample Number Mean Range 1 1 3 2. 3 3 23 1 12 2. 24 7 75 5 6 6 7 7 9 64 8 0 0 9 5 99 6 9 11 06 9 12 13 9 96 69546 3 0 0 14 8 15 4 b. Determine X and R. (Round your answers to 3 decimal places.) 4 X 3 R b. Determine X and R. (Round your answers to 3 decimal places.) 4 R 3 c. Determine the UCL and LCL for a Xchart. (Round your answers to 3 decimal places.) UCL 2 LCL 18 d. Determine the UCL and LCL for R-chart. (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places.) 2 LCL e. What comments can you make about the process? The process is in statistical control. The process is out of statistical control