Arecording company obtains the blank cds used to produce its labels from three compact disk manufacturers: i, ii, and iii. the quality control department of the company has determined that 3% of the compact disks produced by manufacturer i are defective, 4% of those produced by manufacturer ii are defective, and 4% of those produced by manufacturer iii are defective. manufacturers i, ii, and iii supply 31%, 34%, and 35%, respectively, of the compact disks used by the company. what is the probability that a randomly selected label produced by the company will contain a defective compact disk?