1Company X Star supplies electronic devices. Probability of purchasing a defective device is 0.3. Mr. Chang has
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Question:
1Company "X Star" supplies electronic devices. Probability of purchasing a defective device is 0.3. Mr. Chang has purchased two devices.
(a)What is the probability that at least one device purchased by Mr. Chang is good?
(b)What is the probability that at least one device purchased by Mr. Chang is defective?
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