Assembled portable television sets are subjected to a final inspection for surface defects. A total procedure is established based on the requirement that if the average number of nonconformities per units is 4.0, the probability of concluding that the process is in control will be 0.99. There is to be no lower control limit. What is the appropriate type of control chart and what is the required upper limit?
Answer to relevant QuestionsReconsider the loan application data in Table 7E.2. Set up the fraction nonconforming control chart for this process. Use the standardized control chart approach. Plot the preliminary data in Table 7E.2 on the chart. Is the ...A production line assembles electric clocks. The average number of nonconformities per clock is estimated to be 0.75. The quality engineer wishes to establish a c chart for this operation, using an inspection unit of six ...Kaminsky et al. (1992) present data on the number of orders per truck at a distribution center. Some of these data are sown in Table 7E.24. (a) Set up a c chart for the number of orders per truck. Is the process in ...Table 8E.4 presents data on the waiting time in minutes) to see a nurse or physician in a hospital emergency department. Prepare a normal probability plot of these data. The hospital has a policy of seeing all patients ...An operator-instrument combination is known to test parts with an average error of zero; however, the standard deviation of measurement error is estimated to be 3. Samples from a controleld process were analyzed, and the ...
Post your question