Question: A store has 80 modems in its inventory, 30 coming from Source A and the remainder from Source B. Of the modems from Source A,

A store has 80 modems in its inventory, 30 coming from Source A and the remainder from Source B. Of the modems from Source A, 20% are defective. Of the modem from Source B 8% are defective.

Calculate the probability that exactly two out of a random sample of the five modems from the store's inventory are defective.

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