a. Estimate the potential capability.
b. Estimate the actual capability.
c. How much could process fallout be reduced by shifting the mean to the nominal dimension? Assume that the quality characteristic is normally distributed.
Answer to relevant QuestionsThe weights of nominal 1-kg containers of a concentrated chemical ingredient are shown in Table 5E.14. Prepare a normal probability plot of the data and estimate process capability. If a process is in a state of statistical control, does it necessarily follow that all or nearly all of the units of product produced will be within the specification limits? Why is the np chart not appropriate with variable sample sizes? The data in Table 6E.12 represent the number of nonconformities per 1,000 meters of telephone cable. From an analysis of these data, would you conclude that the process is in statistical control? What control limits would ...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 ...
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