In one day a department manufactures four products, each of which has an independent chance of 20% being faulty. The probability that at least three products are not faulty is:
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I guess...
Step-by-step explanation:
The probability that a piece is defective is 0.06. Thus the probability it is not defective is 1−0.06, that is, 0.94. The probability that all four items are non-defective is therefore (0.94)4.
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