Proportion of defect for sample

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Reference no: EM13843046

Suppose that you have calculated the control limits for a p-chart to be: LCL = 0 and UCL = 0.04. Today you took 10 samples of 20 units each. The first nine samples each had zero defect. The last sample had three defects. What can you conclude?

The proportion of defect for sample 10 is 0.3, therefore the process is out of control

The proportion of defect for sample 10 is 0.05, therefore the process is still in control

The proportion of defect for sample 10 is 0.15, therefore the process is out of control

The proportion of defect for sample 10 is 0.05, therefore the process is out of control

A new UCL and LCL should be computed

Reference no: EM13843046

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