Question: When a particular machine is functioning properly, 80% of the items produced are non-defective. 1. If six items are examined, what is the probability that

When a particular machine is functioning properly, 80% of the items produced are non-defective.

1. If six items are examined, what is the probability that exactly four are non-defective?

2. If six items are examined, what is the probability that exactly three are defective?

3. If six items are examined, what is the probability that at least four are non-defective?

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