Samples of 20 parts from a metal punching process are selected every hour. Typically, 1% of the parts require rework. Let X denote the number of parts in the sample of 20 that does not require rework. If the rework percentage increases to 4%, what is the probability that all 20 samples do not require rework? a. 0.4420 O b. NONE O.0.5580 O d. 0.8179

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