•.• $6.10 A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n = 5) taken. The population standard deviation is 1.36. Samples 3 4 5 8 910 8. 8. 12: 13 10 10 10 13 10 12 10 9. 10 9 10 10. 103 10 11 10 9. 6: 10 11 11: 8. 12 8. 69. 11 10. 10 11 12 8. 10 12 12 10 10 10 6: 8. 12 a) What is the process standard deviation o? What is oz? b) If z = 3, what are the control limits for the mean chart? c) What are the control limits for the range chart? d) Is the process in control? K

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