Question
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart. The samples and number of defectives in each
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart. The samples and number of defectives in each are shown in the following table: Number of Defects in Number of Defects in Sample n Sample Sample n Sample 1 15 3 6 17 2 2 15 1 7 15 0 3 15 0 8 15 3 4 15 0 9 15 1 5 15 0 10 15 0 Based on a 95% percent confidence, what is true about this process? Stop the process and look for more information of sample 6, it appears to be out of statistical control. Don't stop the process, but monitor it closely because it appears that is going to be out of control soon. Don't stop the process; it appears to be in statistical control. Stop the process and look for the special cause, it appears to be out of statistical control.
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