(Answered) A government task force suspects that some manufacturing

Statistics

A government task force suspects that some manufacturing companies are in violation of federal pollution regulations with regard to dumping a certain type of product. Twenty firms are under suspicion but all cannot be inspected. Suppose that 3 of the firms are; in violation.

a) What is the probability that inspection of 5 firms finds no violations?

b) What is the probability that the plan above will find two violations?

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