Question: Suppose a manager must construct either a mean chart with known variation or a p-chart to monitor some process. When the process is in control,

Suppose a manager must construct either a mean chart with known variation or a p-chart to monitor some process. When the process is in control, the manager wants only 0.6% of the samples taken to fall outside these limits. What z-value should be used when calculating the limits for this chart?

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