Question: Please show how to solve it using formulas not through excel. Sample Problem 2 The Perfect Circle Company manufactures bushings. Once each hour a sample

Please show how to solve it using formulas not through excel.

Sample Problem 2 The Perfect Circle Company manufactures bushings. Once each hour a sample of 125 finished bushings is drawn from the output and examined by a technician. Those which fail are classified as defective and the rest are satisfactory. Here is the data on ten consecutive samples. Sample Number Defective 1 15 2 13 3 16 4 11 5 13 6 14 7 20 8 25 9 30 10 45 A) What type of control chart should be used here? B) What are the upper and lower control limits? C) Is the system in control? D) What should the quality control engineer do

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