Question: The number of workmanship nonconformities observed in the final inspection
The number of workmanship nonconformities observed in the final inspection of disk-drive assemblies has been tabulated as shown in Table 6E.14. Does the process appear to be in control?
Answer to relevant QuestionsThe manufacturer wishes to set up a control chart at the final inspection station for a gas water heater. Defects in workmanship and visual quality features are checked in this inspection. For the past 22 working days, 176 ...Suggest at least two nonmanufacturing scenarios in which attributes control charts could be useful for process monitoring. A process produces rubber belts in lots of size 2,500. Inspection records on the last 20 lots reveal the data in Table 6E.5. a. Compute trial control limits for a fraction nonconforming control chart. b. If you wanted to ...Draw the primary and supplementary OC curves for a double-sampling plan with . If the incoming lots have fraction nonconforming , what is the probability of acceptance on the first sample? What is the probability of final ...A product is shipped in lots of size . Find a Dodge-Romig single-sampling plan for which the LTPD = 1%, assuming that the process average is 0.25% defective. Draw the OC curve and the ATI curve for this plan. What is the ...
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