Question

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

Answer 1

Answer:

option b I guess hope it helps