Question: A process is being considered for using statistical process control measures an ingredient in ounces. Below are the last 10 samples (each of size n=6)

A process is being considered for using statistical process control measures an ingredient in ounces. Below are the last 10 samples (each of size n=6) taken. (Round your answers to two decimals if needed.) Samples Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 1 1 11 10 9 10 13 11 2 10 9 11 10 11 9 9 3 13 9 9 9 10 ON 9 10 4 10 9 11 9 11 11 ch 11 9 9 11 10 19 9 9 8 13 B 14 9 11 10 7 8 11 8 13 10 11 7 18 8 9 13 13 10 12 10 10 13 10 7 12 11 1. What control chart(s) should be used here? Why? 2. Calculate the CL, UCL and LCL for the control chart(s) 3. Is this process in control? SPC Control Limits Tables attached here: APPENDIX 1.88 TABLEA I Factors for Determining Control Limits for and R Charts Number of Factors for R Chart Observations in Subgroup Factor for X Chart Factor for X Chart Lower Control Umit Az Upper Control Limit D) DA 2 266 0 3 3.27 1.02 1.77 4 0.73 257 1.46 5 228 0.58 1.29 6 211 0.48 1.18 0 7 2.00 0.42 111 008 8 0.37 192 1.05 0.14 9 034 1 86 1.01 0,18 10 1.82 031 0.22 11 0.29 0.26 1.74 12 027 028 13 192 0.25 14 031 1.69 0.24 0.33 15 167 022 0.35 16 165 021 036 17 020 154 ON 18 162 019 09 19 361 0:59 Qed 20 160 0.18 041 1:59 0.98

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