Ten samples  ,CAST STUDY  solution

CASE STUDY - 1
Ten samples of 15 parts each were taken from an ongoing process to establish a p chart for control. The samples and the number

of defectives in each are shown in the following table:
a. Develop a p chart for 95 percent confidence (1.96 standard deviations).
b. Based on the plotted data points, what comments can you make