Derive a general expression for the probability

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1. Consider Western Electric rule 3. What is the probability of four out of five consecutive points plotting beyond the 2σ warning limits?

2. A normally distributed quality characteristic is monitored by a control chart with 3σ limits. Derive a general expression for the probability that a point will plot outside the control limits when the process is in fact in control.

Reference no: EM131297560

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