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What is the standard deviation if a proportion of 0.44 is found from twenty samples of size 116, twenty samples of size 114, and three samples of size 112?

A) 0.130 B) 0.164 C) 0.103 D) 0.046

Process capability analysis should be used only after ________

A) control charts indicate that all special causes have been eliminated B) control charts show that the process is out of control C) common and special causes are known D) a plan for getting the process under statistical control has been agreed upon