Quality and Reliability · Quality Management · 2 marks · Multiple choice
Four independent out-of-control rules are used simultaneously. Their Type-I error probabilities are 0.005,0.02,0.03,0.05. Find overall Type-I error probability.
A false signal occurs if at least one rule signals. Probability of no false signal is $(1-0.005)(1-0.02)(1-0.03)(1-0.05)=0.89895465$. Complement is 0.10104535, or **0.101, A**.
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