3 Ten samples of 15 parts each were taken from an ongoing process to establish ap chart for con- trol. The samples and the number of defectives in each are shown in the following table:

a. Develop ap chart for 95 percent confidence (1.96 standard deviations).

b. Based on the plotted data points, what comments can you make?

Transcribed Image Text:

NUMBER OF DEFECTS IN SAMPLE n SAMPLE SAMPLE n NUMBER OF DEFECTS IN SAMPLE 12345 15 15 31 6 15 7 15 15 8 15 203 15 0 9 15 1 5 15 0 10 15 0