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thereddevils A computer accessories distributor obtains its supply if diskettes from manufacturers A abd B with 60 % of the diskettes from manufacturer A . The diskettes are packed by the manufacturers in packets of tens . The probability that a diskette produced by manufacturer A is defective is 0.05 whereas the probability that a diskette produced by manufacturer B is defective is 0.02 . Find the probability that a randomly chosen packet contains exactly one defective diskette .