A textile manufacturing process finds that on average, two flaws occur per every 50 yards of material produced.   a. What is the probability of exactly two flaws in a 50-yard piece of material? (Do not round intermediate calculations. Round your final answer to 4 decimal places.)       b. What is the probability of no more than two flaws in a 50-yard piece of material? (Do not round intermediate calculations. Round your final answer to 4 decimal places.)       c. What is the probability of no flaws in a 25-yard piece of material? (Do not round intermediate calculations. Round your final answer to 4 decimal places.)

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