Mathematics

Mathematics

Problem

Three independent machines M1,M2M_1, M_2 and M3M_3 in a factory produce a defective item on a particular day with probabilities 0.050.05, 0.040.04 and 0.060.06 respectively. a. (i) Find the probability that at least one of the machines produces a defective item on that day. b. (ii) Find the probability that at most one machine produces a defective item on that day. c. (iii) Find the probability that exactly two machines produce a defective item on that day.

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