If 20% of the bolts produced by a machine are defective, determine the probability that out of 4
bolts chosen at random,
(a) exactly 3 are defective.
(b) at least 3 are defective.
(c) 2 bolts are non-defective.
(d) at most 1 is non-defective
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Answer:
option b I guess hope it helps
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