Essay
A Nevada Bank keeps track of errors from 20 clerks.Each sample has 100 records.They want to construct a P-chart to track the proportion of errors in each sample.The table below shows the number of errors per sample.(Use z=3 for control limit calculations.)
a.Determine P.
b.Determine σP.
c.Determine the 3-sigma UCL and LCL.
d.Does the process appear to be in statistical control?
Correct Answer:
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a. 88/2000=0.044 or 4.4%
b.
\[
\sigma_{0 ...View Answer
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Correct Answer:
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b.
\[
\sigma_{0 ...
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