Question: An engine manufacturer uses a forging process to make piston rings. The quality engineers want to assess the process capability. They collect 25 subgroups of

An engine manufacturer uses a forging process to make piston rings. The quality

engineers want to assess the process capability. They collect 25 subgroups of five piston rings and measure the diameters. The specification limits for piston ring diameter are 74.0 mm 0.05 mm. Use the Six-Pack output below.

An engine manufacturer uses a forging process to

Process Capability Sixpack Report for Diameter Xbar Chart Capability Histogram UCL-7401458 USB 74.01 Sample Mean Overall Within Specifications LSL 73.95 USL 74.05 74.00 227400118 73.99 LC273.98777 21 23 25 19 73950 73.985 73.900 73995 74.000 74035 74040 Normal Prob Plot AD: 0.193, P: 0.892 R Chart UC-G04914 0.04 R-002324 0.02 0.00 LCO 21 23 25 73.90 74.00 74.02 74 04 Last 25 Subgroups Capability Plot Overall Within SeDev 0.01005 74.02 Overall StDev 0.01020 Values 74.00 Within 73.98 Specs 20 25 15 Sample LSL - X USL - X Cpk = Min(Cpu, Cpu) = Min 30 30 b. Is this process centered on target? (Yes or No and why) - Explain c. What can you conclude about the actual process capability

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