Suppose 2% of cotton fabric rolls and 3% of nylon fabric rolls contain flaws. Of the rolls used by a manufacturer, 70% are cotton and 30% are nylon. What is the probability that a randomly selected roll used by the manufacturer contains no flaws? Let F denote the event that a roll contains a flaw and let C denote the event that a roll is cotton. (Show complete solution in your answer sheet) O a. 0.023 O b. None among the choices O c. 0.686 O d. 0.977

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